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<li class="navelem"><a class="el" href="namespaceGlib.html">Glib</a></li><li class="navelem"><a class="el" href="namespaceGlib_1_1Threads.html">Threads</a></li><li class="navelem"><a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a></li> </ul>
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<a href="#nested-classes">Classes</a> |
<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">Glib::Threads::Thread Class Reference<div class="ingroups"><a class="el" href="group__Threads.html">Threads</a></div></div> </div>
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<p>Represents a running thread.
<a href="classGlib_1_1Threads_1_1Thread.html#details">More...</a></p>
<p><code>#include <glibmm/threads.h></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread_1_1Exit.html">Exit</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Exception class used to exit from a thread. <a href="classGlib_1_1Threads_1_1Thread_1_1Exit.html#details">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ad68ccd7d8209913f09f742aef95758e1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad68ccd7d8209913f09f742aef95758e1">join</a> ()</td></tr>
<tr class="memdesc:ad68ccd7d8209913f09f742aef95758e1"><td class="mdescLeft"> </td><td class="mdescRight">Waits until the thread finishes. <a href="#ad68ccd7d8209913f09f742aef95758e1">More...</a><br /></td></tr>
<tr class="separator:ad68ccd7d8209913f09f742aef95758e1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae2afcdad184e8064ab21edcb287e50d3"><td class="memItemLeft" align="right" valign="top">GThread* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#ae2afcdad184e8064ab21edcb287e50d3">gobj</a> ()</td></tr>
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<tr class="memitem:a36d0432f001070d70cc52946b9e797f7"><td class="memItemLeft" align="right" valign="top">const GThread* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#a36d0432f001070d70cc52946b9e797f7">gobj</a> () const </td></tr>
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Static Public Member Functions</h2></td></tr>
<tr class="memitem:ad89d142f0a9fd02d476dbed49dd17b85"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad89d142f0a9fd02d476dbed49dd17b85">create</a> (const <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/classsigc_1_1slot.html">sigc::slot</a>< void >& slot)</td></tr>
<tr class="memdesc:ad89d142f0a9fd02d476dbed49dd17b85"><td class="mdescLeft"> </td><td class="mdescRight">Creates a new thread. <a href="#ad89d142f0a9fd02d476dbed49dd17b85">More...</a><br /></td></tr>
<tr class="separator:ad89d142f0a9fd02d476dbed49dd17b85"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2ffdf8dd86ea405669f610c7d47c90e9"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#a2ffdf8dd86ea405669f610c7d47c90e9">create</a> (const <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/classsigc_1_1slot.html">sigc::slot</a>< void >& slot, const <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a>& name)</td></tr>
<tr class="memdesc:a2ffdf8dd86ea405669f610c7d47c90e9"><td class="mdescLeft"> </td><td class="mdescRight">Creates a new named thread. <a href="#a2ffdf8dd86ea405669f610c7d47c90e9">More...</a><br /></td></tr>
<tr class="separator:a2ffdf8dd86ea405669f610c7d47c90e9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7289f43e01199fa1cf7df67f725f8cef"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#a7289f43e01199fa1cf7df67f725f8cef">self</a> ()</td></tr>
<tr class="memdesc:a7289f43e01199fa1cf7df67f725f8cef"><td class="mdescLeft"> </td><td class="mdescRight">Returns the Thread* corresponding to the calling thread. <a href="#a7289f43e01199fa1cf7df67f725f8cef">More...</a><br /></td></tr>
<tr class="separator:a7289f43e01199fa1cf7df67f725f8cef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0b4e6d3fe278429716f0e0cca3654fde"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Threads_1_1Thread.html#a0b4e6d3fe278429716f0e0cca3654fde">yield</a> ()</td></tr>
<tr class="memdesc:a0b4e6d3fe278429716f0e0cca3654fde"><td class="mdescLeft"> </td><td class="mdescRight">Gives way to other threads waiting to be scheduled. <a href="#a0b4e6d3fe278429716f0e0cca3654fde">More...</a><br /></td></tr>
<tr class="separator:a0b4e6d3fe278429716f0e0cca3654fde"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="related"></a>
Related Functions</h2></td></tr>
<tr><td class="ititle" colspan="2"><p>(Note that these are not member functions.) </p>
</td></tr>
<tr class="memitem:ga6bfbb3119eaac9fa8cb725aa1e82f61e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__Threads.html#ga6bfbb3119eaac9fa8cb725aa1e82f61e">wrap</a> (GThread* gobject)</td></tr>
<tr class="separator:ga6bfbb3119eaac9fa8cb725aa1e82f61e"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Represents a running thread. </p>
<p>An instance of this class can only be obtained with <a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad89d142f0a9fd02d476dbed49dd17b85" title="Creates a new thread. ">create()</a>, <a class="el" href="classGlib_1_1Threads_1_1Thread.html#a7289f43e01199fa1cf7df67f725f8cef" title="Returns the Thread* corresponding to the calling thread. ">self()</a>, or <a class="el" href="group__Threads.html#ga6bfbb3119eaac9fa8cb725aa1e82f61e">wrap(GThread*)</a>. It's not possible to delete a <a class="el" href="classGlib_1_1Threads_1_1Thread.html" title="Represents a running thread. ">Thread</a> object. You must call <a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad68ccd7d8209913f09f742aef95758e1" title="Waits until the thread finishes. ">join()</a> to avoid a memory leak.</p>
<dl class="section note"><dt>Note</dt><dd>g_thread_exit() is not wrapped, because that function exits a thread without any cleanup. That's especially dangerous in C++ code, since the destructors of automatic objects won't be invoked. Instead, you can throw a <a class="el" href="classGlib_1_1Threads_1_1Thread_1_1Exit.html" title="Exception class used to exit from a thread. ">Threads::Thread::Exit</a> exception, which will be caught by the internal thread entry function.</dd>
<dd>
You might have noticed that the thread entry slot doesn't have the usual void* return value. If you want to return any data from your thread you can pass an additional output argument to the thread's entry slot. </dd></dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="thread_2dispatcher_8cc-example.html#_a2">thread/dispatcher.cc</a>, and <a class="el" href="thread_2thread_8cc-example.html#_a11">thread/thread.cc</a>.</dd>
</dl></div><h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="ad89d142f0a9fd02d476dbed49dd17b85"></a>
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<div class="memproto">
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<td class="memname">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* Glib::Threads::Thread::create </td>
<td>(</td>
<td class="paramtype">const <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/classsigc_1_1slot.html">sigc::slot</a>< void > & </td>
<td class="paramname"><em>slot</em></td><td>)</td>
<td></td>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
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</div><div class="memdoc">
<p>Creates a new thread. </p>
<p>You can wait for this thread's termination by calling <a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad68ccd7d8209913f09f742aef95758e1" title="Waits until the thread finishes. ">join()</a>.</p>
<p>The new thread executes the function or method <em>slot</em> points to. You can pass additional arguments using <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__bind.html#ga2f099bc6056b32f2a58134ba8537c6f4">sigc::bind()</a>. If the thread was created successfully, it is returned, otherwise a <a class="el" href="classGlib_1_1Threads_1_1ThreadError.html" title="Exception class for thread-related errors. ">Threads::ThreadError</a> exception is thrown.</p>
<p>Because <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/structsigc_1_1trackable.html">sigc::trackable</a> is not thread-safe, if the slot represents a non-static class method and is created by <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__mem__fun.html#gadf6b6d22c503b439019f0a2e77352419">sigc::mem_fun()</a>, the class concerned should not derive from <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/structsigc_1_1trackable.html">sigc::trackable</a>. You can use, say, boost::bind() or, in C++11, <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01682.html#ga4c3052b337dde285bace96cbb996055c">std::bind()</a> or a C++11 lambda expression instead of <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__mem__fun.html#gadf6b6d22c503b439019f0a2e77352419">sigc::mem_fun()</a>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">slot</td><td>A slot to execute in the new thread. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The new Thread* on success. </dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname"><a class="el" href="classGlib_1_1Threads_1_1ThreadError.html" title="Exception class for thread-related errors. ">Glib::Threads::ThreadError</a></td><td></td></tr>
</table>
</dd>
</dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="thread_2dispatcher_8cc-example.html#a9">thread/dispatcher.cc</a>, and <a class="el" href="thread_2thread_8cc-example.html#a12">thread/thread.cc</a>.</dd>
</dl>
</div>
</div>
<a class="anchor" id="a2ffdf8dd86ea405669f610c7d47c90e9"></a>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
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<table class="memname">
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<td class="memname">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* Glib::Threads::Thread::create </td>
<td>(</td>
<td class="paramtype">const <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/classsigc_1_1slot.html">sigc::slot</a>< void > & </td>
<td class="paramname"><em>slot</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a> & </td>
<td class="paramname"><em>name</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Creates a new named thread. </p>
<p>You can wait for this thread's termination by calling <a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad68ccd7d8209913f09f742aef95758e1" title="Waits until the thread finishes. ">join()</a>.</p>
<p>The new thread executes the function or method <em>slot</em> points to. You can pass additional arguments using <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__bind.html#ga2f099bc6056b32f2a58134ba8537c6f4">sigc::bind()</a>. If the thread was created successfully, it is returned, otherwise a <a class="el" href="classGlib_1_1Threads_1_1ThreadError.html" title="Exception class for thread-related errors. ">Threads::ThreadError</a> exception is thrown.</p>
<p>Because <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/structsigc_1_1trackable.html">sigc::trackable</a> is not thread-safe, if the slot represents a non-static class method and is created by <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__mem__fun.html#gadf6b6d22c503b439019f0a2e77352419">sigc::mem_fun()</a>, the class concerned should not derive from <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/structsigc_1_1trackable.html">sigc::trackable</a>. You can use, say, boost::bind() or, in C++11, <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01682.html#ga4c3052b337dde285bace96cbb996055c">std::bind()</a> or a C++11 lambda expression instead of <a class="elRef" doxygen="/opt/gnome/share/doc/libsigc++-2.0/reference/libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/group__mem__fun.html#gadf6b6d22c503b439019f0a2e77352419">sigc::mem_fun()</a>.</p>
<p>The <em>name</em> can be useful for discriminating threads in a debugger. It is not used for other purposes and does not have to be unique. Some systems restrict the length of <em>name</em> to 16 bytes.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">slot</td><td>A slot to execute in the new thread. </td></tr>
<tr><td class="paramname">name</td><td>A name for the new thread. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The new Thread* on success. </dd></dl>
<dl class="exception"><dt>Exceptions</dt><dd>
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<tr><td class="paramname"><a class="el" href="classGlib_1_1Threads_1_1ThreadError.html" title="Exception class for thread-related errors. ">Glib::Threads::ThreadError</a></td><td></td></tr>
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<dl class="since_2_36"><dt><b><a class="el" href="since_2_36.html#_since_2_36000005">Since glibmm 2.36:</a></b></dt><dd></dd></dl>
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<td class="memname">GThread* Glib::Threads::Thread::gobj </td>
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<td class="memname">const GThread* Glib::Threads::Thread::gobj </td>
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<td class="memname">void Glib::Threads::Thread::join </td>
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<p>Waits until the thread finishes. </p>
<p>Waits until the thread finishes, i.e. the slot, as given to <a class="el" href="classGlib_1_1Threads_1_1Thread.html#ad89d142f0a9fd02d476dbed49dd17b85" title="Creates a new thread. ">create()</a>, returns or g_thread_exit() is called by the thread. (Calling g_thread_exit() in a C++ program should be avoided.) All resources of the thread including the <a class="el" href="classGlib_1_1Threads_1_1Thread.html" title="Represents a running thread. ">Glib::Threads::Thread</a> object are released. </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="thread_2thread_8cc-example.html#a14">thread/thread.cc</a>.</dd>
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<td class="memname">static <a class="el" href="classGlib_1_1Threads_1_1Thread.html">Thread</a>* Glib::Threads::Thread::self </td>
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<p>Returns the Thread* corresponding to the calling thread. </p>
<dl class="section return"><dt>Returns</dt><dd>The current thread. </dd></dl>
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<td class="memname">static void Glib::Threads::Thread::yield </td>
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<p>Gives way to other threads waiting to be scheduled. </p>
<p>This function is often used as a method to make busy wait less evil. But in most cases, you will encounter, there are better methods to do that. So in general you shouldn't use this function. </p>
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