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<a href="#pub-types">Public Types</a> |
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<div class="title">KProcess Class Reference</div> </div>
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<!-- doxytag: class="KProcess" --><!-- doxytag: inherits="QObject" -->
<p>Child process invocation, monitoring and control.
<a href="classKProcess.html#details">More...</a></p>
<p><code>#include <<a class="el" href="kprocess_8h_source.html">kprocess.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for KProcess:</div>
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<img src="classKProcess.png" usemap="#KProcess_map" alt=""/>
<map id="KProcess_map" name="KProcess_map">
<area href="qobject.html" alt="QObject" shape="rect" coords="52,0,146,24"/>
<area href="classKProcIO.html" title="KProcIO." alt="KProcIO" shape="rect" coords="0,112,94,136"/>
<area href="classKShellProcess.html" title="A class derived from KProcess to start child processes through a shell." alt="KShellProcess" shape="rect" coords="104,112,198,136"/>
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<p><a href="classKProcess-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> { <br/>
  <b>NoCommunication</b> = 0,
<b>Stdin</b> = 1,
<b>Stdout</b> = 2,
<b>Stderr</b> = 4,
<br/>
  <b>AllOutput</b> = 6,
<b>All</b> = 7,
<b>NoRead</b> = 8,
<b>CTtyOnly</b> = NoRead,
<br/>
  <b>MergedStderr</b> = 16
<br/>
}</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">RunMode</a> { <a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7ab8d822b0fb0fc38fafa565197a01b470">DontCare</a>,
<a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7a23184469d4cc8af8e7d34572f22abb78">NotifyOnExit</a>,
<a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7a4c0c592d5216e0fc288ec95aa76b4f44">Block</a>,
<a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7a1e9439b8958d69d2b269ee1b7f4de187">OwnGroup</a>
}</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom">{ <br/>
  <b>PrioLowest</b> = 20,
<b>PrioLow</b> = 10,
<b>PrioLower</b> = 5,
<b>PrioNormal</b> = 0,
<br/>
  <b>PrioHigher</b> = -5,
<b>PrioHigh</b> = -10,
<b>PrioHighest</b> = -19
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="signals"></a>
Signals</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a596356c0f7f45a34b5a701ae3c99ec3b">processExited</a> (<a class="el" href="classKProcess.html">KProcess</a> *proc)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#aa9b31c4a0ff11ff88ad074e130d1d819">receivedStdout</a> (<a class="el" href="classKProcess.html">KProcess</a> *proc, char *buffer, int buflen)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a46408d7234304b36bef80bfb6532d67c">receivedStdout</a> (int fd, int &len)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ae857ef848ab68bac3b40c940ade2ffcf">receivedStderr</a> (<a class="el" href="classKProcess.html">KProcess</a> *proc, char *buffer, int buflen)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ad8640fd7fd567c1c77542868fb6a4688">wroteStdin</a> (<a class="el" href="classKProcess.html">KProcess</a> *proc)</td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a9a49ba65692eccfe2a16b2a98920009b">KProcess</a> (<a class="elRef" href="qobject.html">QObject</a> *<a class="elRef" href="qobject.html#parent">parent</a>, const char *<a class="elRef" href="qobject.html#name">name</a>=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a4182e968400f3f68a835f300b0100d8b">KProcess</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#aaaf0e2133a2218bdcd88003162f67602">~KProcess</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ae759145c7f0cff4f46ca184c679a68bf">setExecutable</a> (const <a class="elRef" href="qstring.html">QString</a> &proc) KDE_DEPRECATED</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html">KProcess</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a622180f48f80ff03c7d29b2d6ae8fa70">operator<<</a> (const <a class="elRef" href="qstring.html">QString</a> &arg)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html">KProcess</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a696695685e7a131fe5142c2af0795ed6">operator<<</a> (const char *arg)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html">KProcess</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a1fe77cf27bce36c3354978c4e938ed3b">operator<<</a> (const <a class="elRef" href="qcstring.html">QCString</a> &arg)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html">KProcess</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a2c023c6dea904e00486ff08ea7214f7e">operator<<</a> (const <a class="elRef" href="qstringlist.html">QStringList</a> &args)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#acc5601a99c9bc865f129d53774ca830a">clearArguments</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947">start</a> (<a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">RunMode</a> runmode=NotifyOnExit, <a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> comm=NoCommunication)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a6855062a434fc86fca2566276de55d5c">kill</a> (int signo=SIGTERM)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ad708457d8072be8ec7471dfea8223bd0">isRunning</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">pid_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b">pid</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">KDE_DEPRECATED pid_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a2fddde3f1103c4c96f85d30117543194">getPid</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a9e8e7f022d168a9d72c08f020d3696dd">suspend</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a05e70e17b2da0677a4ac77c93a9f1eda">resume</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a704f5003cf07f8731c23a62a4e37c2ba">wait</a> (int timeout=-1)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab1075f2a64506742472f45a0dc007066">normalExit</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a993338f761ac3b58355e96920414e250">signalled</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab262878246eb191277b4df7253f6478d">coreDumped</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#afd6932dd27dc8a9efc9b0946a5ec6a55">exitStatus</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a782c70cebd39162bcdafb59769e4d82b">exitSignal</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7693e31b6ac1ff3a67e3dba33c52b039">writeStdin</a> (const char *buffer, int buflen)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a97e1588545f59dc4740b98361b0d5041">closeStdin</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab81b090aacc607fad831aeb8223996df">closeStdout</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a2827d6fa759f83999684619560414311">closeStderr</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ad0285425ec1237978fac076ff653d653">closePty</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a884eff7ae3fdf78add81dca04b048006">closeAll</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="elRef" href="qvaluelist.html">QValueList</a>< <a class="elRef" href="qcstring.html">QCString</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7bba2352cccf0f38b5bd03a8f8571998">args</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a101724b33e03545b1495032b882e6ad4">setRunPrivileged</a> (bool keepPrivileges)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a15dc6134a66a7cdc526522155005b231">runPrivileged</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab04086e71ba6ca36b06b0148656b1b33">setEnvironment</a> (const <a class="elRef" href="qstring.html">QString</a> &<a class="elRef" href="qobject.html#name">name</a>, const <a class="elRef" href="qstring.html">QString</a> &value)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ac7565aedcfd566bd546837a466884edd">setWorkingDirectory</a> (const <a class="elRef" href="qstring.html">QString</a> &dir)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ad7588f452668a2a3c8b44814ff0df953">setUseShell</a> (bool useShell, const char *shell=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a8a48c8a62d33c64bacce18573169f074">detach</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a9ab0370de452a51b31c4b435be62955c">setUsePty</a> (<a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> comm, bool addUtmp)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKPty.html">KPty</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a9e76575c5459566a4c2a1689df9a49e4">pty</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a0d1c518280b0a840f4996ca5afd95903">setPriority</a> (int prio)</td></tr>
<tr><td colspan="2"><h2><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static <a class="elRef" href="qstring.html">QString</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a1ce049f3abcc805d6e5d44988451d32a">quote</a> (const <a class="elRef" href="qstring.html">QString</a> &arg)</td></tr>
<tr><td colspan="2"><h2><a name="pro-slots"></a>
Protected Slots</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab9fe8d414081be6c867317ac78f9ae30">slotChildOutput</a> (int fdno)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7f4f3e5e9836e713bad30ffa60f12574">slotChildError</a> (int fdno)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ad8b7bfecd2823a1ec82f68264203d44b">slotSendData</a> (int dummy)</td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab4912ad4f32b661c65a9f99fe82d0f7e">setupEnvironment</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a6882570c9c871f9a1c8e897e6684b5ac">setupCommunication</a> (<a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> comm)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7b0a71a3192dac2b3d012d1534f4860a">commSetupDoneP</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ab269724f26b9318db64dfdf917df5460">commSetupDoneC</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#abd4f6e864a0dc1991b6de85d3139cba9">processHasExited</a> (int state)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a452a674ce8be325cae6d5def69a77007">commClose</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a8d68d59e47f200017f34ef2530b6fbb9">setBinaryExecutable</a> (const char *filename)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#aab4789728c641923d6a568faf39794c8">childOutput</a> (int fdno)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#affc654d6fc0ecf1ce5477115d2960912">childError</a> (int fdno)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a391a4fa26b977f726308844f072ae683"></a><!-- doxytag: member="KProcess::virtual_hook" ref="a391a4fa26b977f726308844f072ae683" args="(int id, void *data)" -->
virtual void </td><td class="memItemRight" valign="bottom"><b>virtual_hook</b> (int id, void *data)</td></tr>
<tr><td colspan="2"><h2><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="qvaluelist.html">QValueList</a>< <a class="elRef" href="qcstring.html">QCString</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7a247677230d9fb9ad0b97037e4b770f">arguments</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">RunMode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#afd1ff53b0689db4bb6d59170c8ac685d">run_mode</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a0e85361e34f384490630e838de3ee060">runs</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">pid_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7d0e8e183be85db3acb793e14d8efd87">pid_</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a9ba7b8b228ee6796dae2db3d6ddcebda">status</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a78fa30f3005c3aa6d5b257d255b49b1e">keepPrivs</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a1f897b0e8827f91dbb5e48cd172fc592">out</a> [2]</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a0b6a4ec5df514967736ca95a927e4bcb">in</a> [2]</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a1a5bc732f828c6b98431e1bac364b2e6">err</a> [2]</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a5e5c9b65122b0e8ffc9bb9bd178e1af3">innot</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a26538d7ebe7594e951dcb8921f99126a">outnot</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#ac7c7609ebd3ce7c0cd3bba4932ab5fc3">errnot</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a07250914e31e67f7668ccd6924a4016a">communication</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a6c04f1b4b85da186000cbb00601c7a7d">input_data</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a964a2514e86ca1c27819647a65cdf2ac">input_sent</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a932e8f8fa4a4fbd502f738926d4ad3c1">input_total</a></td></tr>
<tr><td colspan="2"><h2><a name="friends"></a>
Friends</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classKProcess.html#a7baecdd52a8731cbc0a80d5754393ba3">KProcessController</a></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Child process invocation, monitoring and control. </p>
<p>This class works only in the application's main thread.</p>
<p><b>General usage and features:</b><br/>
</p>
<p>This class allows a <a class="el" href="namespaceKDE.html" title="Namespace for general KDE functions.">KDE</a> application to start child processes without having to worry about UN*X signal handling issues and zombie process reaping.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classKProcIO.html" title="KProcIO.">KProcIO</a></dd></dl>
<p>Basically, this class distinguishes three different ways of running child processes:</p>
<ul>
<li>DontCare -- The child process is invoked and both the child process and the parent process continue concurrently.</li>
</ul>
<p>The process is started in an own session (see setsid(2)).</p>
<ul>
<li>NotifyOnExit -- The child process is invoked and both the child and the parent process run concurrently.</li>
</ul>
<p>When the child process exits, the <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> instance corresponding to it emits the <a class="elRef" href="qt.html">Qt</a> signal <a class="el" href="classKProcess.html#a596356c0f7f45a34b5a701ae3c99ec3b" title="Emitted after the process has terminated when the process was run in the NotifyOnExit (==default opti...">processExited()</a>. Since this signal is <em>not</em> emitted from within a UN*X signal handler, arbitrary function calls can be made.</p>
<p>Be aware: When the <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> object gets destructed, the child process will be killed if it is still running! This means in particular, that it usually makes no sense to use a <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> on the stack with NotifyOnExit.</p>
<ul>
<li>OwnGroup -- like NotifyOnExit, but the child process is started in an own process group (and an own session, FWIW). The behavior of <a class="el" href="classKProcess.html#a6855062a434fc86fca2566276de55d5c" title="Stop the process (by sending it a signal).">kill()</a> changes to killing the whole process group - this makes this mode useful for implementing primitive job management. It can be used to work around broken wrapper scripts that don't propagate signals to the "real" program. However, use this with care, as you disturb the shell's job management if your program is started from the command line.</li>
</ul>
<ul>
<li>Block -- The child process starts and the parent process is suspended until the child process exits. (<em>Really</em> not recommended for programs with a GUI.) In this mode the parent can read the child's output, but can't send it any input.</li>
</ul>
<p><a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> also provides several functions for determining the exit status and the pid of the child process it represents.</p>
<p>Furthermore it is possible to supply command-line arguments to the process in a clean fashion (no null-terminated stringlists and such...)</p>
<p>A small usage example: </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> *proc = <span class="keyword">new</span> <a class="code" href="classKProcess.html#a4182e968400f3f68a835f300b0100d8b" title="Constructor.">KProcess</a>;
*proc << <span class="stringliteral">"my_executable"</span>;
*proc << <span class="stringliteral">"These"</span> << <span class="stringliteral">"are"</span> << <span class="stringliteral">"the"</span> << <span class="stringliteral">"command"</span> << <span class="stringliteral">"line"</span> << <span class="stringliteral">"args"</span>;
<a class="codeRef" href="qobject.html#connect">QApplication::connect</a>(proc, SIGNAL(<a class="code" href="classKProcess.html#a596356c0f7f45a34b5a701ae3c99ec3b" title="Emitted after the process has terminated when the process was run in the NotifyOnExit (==default opti...">processExited</a>(<a class="code" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> *)),
pointer_to_my_object, SLOT(my_objects_slot(<a class="code" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> *)));
proc-><a class="code" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start</a>();
</pre></div><p>This will start "my_executable" with the commandline arguments "These"...</p>
<p>When the child process exits, the slot will be invoked.</p>
<p><b>Communication with the child process:</b><br/>
</p>
<p><a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> supports communication with the child process through stdin/stdout/stderr.</p>
<p>The following functions are provided for getting data from the child process or sending data to the child's stdin (For more information, have a look at the documentation of each function):</p>
<ul>
<li><a class="el" href="classKProcess.html#a7693e31b6ac1ff3a67e3dba33c52b039" title="Transmit data to the child process' stdin.">writeStdin()</a> -- Transmit data to the child process' stdin. When all data was sent, the signal <a class="el" href="classKProcess.html#ad8640fd7fd567c1c77542868fb6a4688" title="Emitted after all the data that has been specified by a prior call to writeStdin() has actually been ...">wroteStdin()</a> is emitted.</li>
</ul>
<ul>
<li>When data arrives at stdout or stderr, the signal <a class="el" href="classKProcess.html#aa9b31c4a0ff11ff88ad074e130d1d819" title="Emitted, when output from the child process has been received on stdout.">receivedStdout()</a> resp. <a class="el" href="classKProcess.html#ae857ef848ab68bac3b40c940ade2ffcf" title="Emitted, when output from the child process has been received on stderr.">receivedStderr()</a> is emitted.</li>
</ul>
<ul>
<li>You can shut down individual communication channels with <a class="el" href="classKProcess.html#a97e1588545f59dc4740b98361b0d5041" title="Shuts down the Stdin communication link.">closeStdin()</a>, <a class="el" href="classKProcess.html#ab81b090aacc607fad831aeb8223996df" title="Shuts down the Stdout communication link.">closeStdout()</a>, and <a class="el" href="classKProcess.html#a2827d6fa759f83999684619560414311" title="Shuts down the Stderr communication link.">closeStderr()</a>, resp.</li>
</ul>
<dl class="author"><dt><b>Author:</b></dt><dd>Christian Czezatke <a href="mailto:e9025461@student.tuwien.ac.at">e9025461@student.tuwien.ac.at</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00125">125</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
</div><hr/><h2>Member Enumeration Documentation</h2>
<a class="anchor" id="a45cfd3f43990cb329ff64c35b7a5c417"></a><!-- doxytag: member="KProcess::@13" ref="a45cfd3f43990cb329ff64c35b7a5c417" args="" -->
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<p>More or less intuitive constants for use with <a class="el" href="classKProcess.html#a0d1c518280b0a840f4996ca5afd95903" title="Sets the scheduling priority of the process.">setPriority()</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00568">568</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<td class="memname">enum <a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">KProcess::Communication</a></td>
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<p>Modes in which the communication channel can be opened. </p>
<p>If communication for more than one channel is required, the values have to be or'ed together, for example to get communication with stdout as well as with stdin, you would specify <code>Stdin</code> | <code>Stdout</code> </p>
<p>If <code>NoRead</code> is specified in conjunction with <code>Stdout</code>, no data is actually read from <code>Stdout</code> but only the signal <a class="el" href="classKProcess.html#a46408d7234304b36bef80bfb6532d67c" title="Emitted when output from the child process has been received on stdout.">receivedStdout(int fd, int &len)</a> is emitted.</p>
<p><code>CTtyOnly</code> tells <a class="el" href="classKProcess.html#a9ab0370de452a51b31c4b435be62955c" title="Specify whether to create a pty (pseudo-terminal) for running the command.">setUsePty()</a> to create a PTY for the process and make it the process' controlling TTY, but does not redirect any I/O channel to the PTY.</p>
<p>If <code>MergedStderr</code> is specified in conjunction with <code>Stdout</code>, Stderr will be redirected onto the same file handle as Stdout, i.e., all error output will be signalled with <a class="el" href="classKProcess.html#aa9b31c4a0ff11ff88ad074e130d1d819" title="Emitted, when output from the child process has been received on stdout.">receivedStdout()</a>. Don't specify <code>Stderr</code> if you specify <code>MergedStderr</code>. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00152">152</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<td class="memname">enum <a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">KProcess::RunMode</a></td>
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<p>Run-modes for a child process. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a2fbcd413da7eb360ac1a71761f1631b7ab8d822b0fb0fc38fafa565197a01b470"></a><!-- doxytag: member="DontCare" ref="a2fbcd413da7eb360ac1a71761f1631b7ab8d822b0fb0fc38fafa565197a01b470" args="" -->DontCare</em> </td><td>
<p>The application does not receive notifications from the subprocess when it is finished or aborted. </p>
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<tr><td valign="top"><em><a class="anchor" id="a2fbcd413da7eb360ac1a71761f1631b7a23184469d4cc8af8e7d34572f22abb78"></a><!-- doxytag: member="NotifyOnExit" ref="a2fbcd413da7eb360ac1a71761f1631b7a23184469d4cc8af8e7d34572f22abb78" args="" -->NotifyOnExit</em> </td><td>
<p>The application is notified when the subprocess dies. </p>
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<tr><td valign="top"><em><a class="anchor" id="a2fbcd413da7eb360ac1a71761f1631b7a4c0c592d5216e0fc288ec95aa76b4f44"></a><!-- doxytag: member="Block" ref="a2fbcd413da7eb360ac1a71761f1631b7a4c0c592d5216e0fc288ec95aa76b4f44" args="" -->Block</em> </td><td>
<p>The application is suspended until the started process is finished. </p>
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<tr><td valign="top"><em><a class="anchor" id="a2fbcd413da7eb360ac1a71761f1631b7a1e9439b8958d69d2b269ee1b7f4de187"></a><!-- doxytag: member="OwnGroup" ref="a2fbcd413da7eb360ac1a71761f1631b7a1e9439b8958d69d2b269ee1b7f4de187" args="" -->OwnGroup</em> </td><td>
<p>Same as NotifyOnExit, but the process is run in an own session, just like with DontCare. </p>
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</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00164">164</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a9a49ba65692eccfe2a16b2a98920009b"></a><!-- doxytag: member="KProcess::KProcess" ref="a9a49ba65692eccfe2a16b2a98920009b" args="(QObject *parent, const char *name=0)" -->
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<td class="memname">KProcess::KProcess </td>
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<p>Constructor. </p>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00120">120</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Constructor. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00145">145</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Destructor: </p>
<p>If the process is running when the destructor for this class is called, the child process is killed with a SIGKILL, but only if the run mode is not of type <code>DontCare</code>. Processes started as <code>DontCare</code> keep running anyway. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00225">225</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<hr/><h2>Member Function Documentation</h2>
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<p>Lets you see what your arguments are for debugging. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the list of arguments </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00467">467</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<p>Called by <a class="el" href="classKProcess.html#a7f4f3e5e9836e713bad30ffa60f12574" title="This slot gets activated when data from the child's stderr arrives.">slotChildError()</a> this function copies data arriving from the child process' stderr to the respective buffer and emits the signal <a class="el" href="classKProcess.html#ae857ef848ab68bac3b40c940ade2ffcf" title="Emitted, when output from the child process has been received on stderr.">receivedStderr()</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00859">859</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Called by <a class="el" href="classKProcess.html#ab9fe8d414081be6c867317ac78f9ae30" title="This slot gets activated when data from the child's stdout arrives.">slotChildOutput()</a> this function copies data arriving from the child process' stdout to the respective buffer and emits the signal <a class="el" href="classKProcess.html#aa9b31c4a0ff11ff88ad074e130d1d819" title="Emitted, when output from the child process has been received on stdout.">receivedStdout()</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00836">836</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Clear a command line argument list that has been set by using operator<<. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00293">293</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::closeAll </td>
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<p>Close stdin, stdout, stderr and the pty. </p>
<p>This is the same that calling all close* functions in a row: </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classKProcess.html#a97e1588545f59dc4740b98361b0d5041" title="Shuts down the Stdin communication link.">closeStdin</a>, </dd>
<dd>
<a class="el" href="classKProcess.html#ab81b090aacc607fad831aeb8223996df" title="Shuts down the Stdout communication link.">closeStdout</a>, </dd>
<dd>
<a class="el" href="classKProcess.html#a2827d6fa759f83999684619560414311" title="Shuts down the Stderr communication link.">closeStderr</a> and </dd>
<dd>
<a class="el" href="classKProcess.html#ad0285425ec1237978fac076ff653d653" title="Deletes the optional utmp entry and closes the pty.">closePty</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00717">717</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Deletes the optional utmp entry and closes the pty. </p>
<p>Make sure to shut down any communication links that are using the pty before calling this function.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>false if the pty is not open (any more). </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00702">702</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Shuts down the Stderr communication link. </p>
<p>If no pty is used, any further attempts by the child to write to its stderr file descriptor will cause it to receive a SIGPIPE.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>false if no Stderr communication link exists (any more). </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00688">688</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Shuts down the Stdin communication link. </p>
<p>If no pty is used, this causes "EOF" to be indicated on the child's stdin file descriptor.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>false if no Stdin communication link exists (any more). </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00660">660</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">bool KProcess::closeStdout </td>
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<p>Shuts down the Stdout communication link. </p>
<p>If no pty is used, any further attempts by the child to write to its stdout file descriptor will cause it to receive a SIGPIPE.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>false if no Stdout communication link exists (any more). </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00674">674</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::commClose </td>
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<p>Cleans up the communication links to the child after it has exited. </p>
<p>This function should act upon the values of <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> and runs. See the <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a> source for details. </p>
<ul>
<li>If <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> returns zero, the communication links should be closed only. </li>
<li>if <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> returns non-zero and runs is false, all data immediately available from the communication links should be processed before closing them. </li>
<li>if <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> returns non-zero and runs is true, the communication links should be monitored for data until the file handle returned by <a class="el" href="classKProcessController.html#afa2b4fcac10b3a5b08f7ab6899905c02" title="Only a single instance of this class is allowed at a time, and this static variable is used to track ...">KProcessController::theKProcessController</a>->notifierFd() becomes ready for reading - when it triggers, runs should be reset to false, and the function should be immediately left without closing anything.</li>
</ul>
<p>The previous semantics of this function are forward-compatible, but should be avoided, as they are prone to race conditions and can cause <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> (and thus the whole program) to lock up under certain circumstances. At the end the function closes the communication links in any case. Additionally </p>
<ul>
<li>if runs is true, the communication links are monitored for data until all of them have returned EOF. Note that if any system function is interrupted (errno == EINTR) the polling loop should be aborted. </li>
<li>if runs is false, all data immediately available from the communication links is processed. </li>
</ul>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l01037">1037</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">int KProcess::commSetupDoneC </td>
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<p>Called right after a (successful) fork(), but before an exec() on the child process' side. </p>
<p>It usually duplicates the in[0], out[1] and err[1] file handles to the respective standard I/O handles. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00987">987</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">int KProcess::commSetupDoneP </td>
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<p>Called right after a (successful) fork() on the parent side. </p>
<p>This function will usually do some communications cleanup, like closing in[0], out[1] and out[1].</p>
<p>Furthermore, it must also create the QSocketNotifiers innot, outnot and errnot and connect their <a class="elRef" href="qt.html">Qt</a> signals to the respective <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> slots.</p>
<p>For a more detailed explanation, it is best to have a look at the default implementation in <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00942">942</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Checks whether a killed process dumped core. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if <a class="el" href="classKProcess.html#a993338f761ac3b58355e96920414e250" title="Checks whether the process was killed by a signal.">signalled()</a> returns true and the process dumped core. Note that on systems that don't define the WCOREDUMP macro, the return value is always false.</dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00606">606</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::detach </td>
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<p>Detaches <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> from child process. </p>
<p>All communication is closed. No exit notification is emitted any more for the child process. Deleting the <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> will no longer kill the child process. Note that the current process remains the parent process of the child process. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00240">240</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Returns the signal the process was killed by. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the signal number that caused the process to exit. Note that this value is not valid if <a class="el" href="classKProcess.html#a993338f761ac3b58355e96920414e250" title="Checks whether the process was killed by a signal.">signalled()</a> returns false.</dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00622">622</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Returns the exit status of the process. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the exit status of the process. Note that this value is not valid if <a class="el" href="classKProcess.html#ab1075f2a64506742472f45a0dc007066" title="Checks whether the process exited cleanly.">normalExit()</a> returns false. </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00616">616</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">KDE_DEPRECATED pid_t KProcess::getPid </td>
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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000048">Deprecated:</a></b></dt><dd>Use <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> instead.</dd></dl>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00318">318</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<p>Checks whether the process is running. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the process is (still) considered to be running </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00504">504</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">bool KProcess::kill </td>
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<p>Stop the process (by sending it a signal). </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd>true if the signal was delivered successfully. </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00493">493</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Checks whether the process exited cleanly. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the process has already finished and has exited "voluntarily", ie: it has not been killed by a signal. </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00594">594</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname"><a class="el" href="classKProcess.html">KProcess</a> & KProcess::operator<< </td>
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<p>Similar to previous method, takes a <a class="elRef" href="qcstring.html">QCString</a>, supposed to be in locale 8 bit already. </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd>a reference to this <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00276">276</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Sets the executable and the command line argument list for this process, in a single method call, or add a list of arguments. </p>
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<dl class="return"><dt><b>Returns:</b></dt><dd>a reference to this <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00268">268</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Similar to previous method, takes a char *, supposed to be in locale 8 bit already. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00281">281</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Sets the executable and the command line argument list for this process. </p>
<p>For example, doing an "ls -l /usr/local/bin" can be achieved by: </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> p;
...
p << <span class="stringliteral">"ls"</span> << <span class="stringliteral">"-l"</span> << <span class="stringliteral">"/usr/local/bin"</span>
</pre></div><dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">arg</td><td>the argument to add </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>a reference to this <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00287">287</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<a class="anchor" id="a3fa6c7307d649ba7b73e1a111fc91d9b"></a><!-- doxytag: member="KProcess::pid" ref="a3fa6c7307d649ba7b73e1a111fc91d9b" args="() const " -->
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<p>Returns the process id of the process. </p>
<p>If it is called after the process has exited, it returns the process id of the last child process that was created by this instance of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a>.</p>
<p>Calling it before any child process has been started by this <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> instance causes <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> to return 0. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the pid of the process or 0 if no process has been started yet. </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00511">511</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<a class="anchor" id="a596356c0f7f45a34b5a701ae3c99ec3b"></a><!-- doxytag: member="KProcess::processExited" ref="a596356c0f7f45a34b5a701ae3c99ec3b" args="(KProcess *proc)" -->
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<td class="memname">void KProcess::processExited </td>
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<td class="paramname"><em>proc</em></td><td>)</td>
<td><code> [signal]</code></td>
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<p>Emitted after the process has terminated when the process was run in the <code>NotifyOnExit</code> (==default option to <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a> ) or the Block mode. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">proc</td><td>a pointer to the process that has exited </td></tr>
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</dd>
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<p>Immediately called after a successfully started process in NotifyOnExit mode has exited. </p>
<p>This function normally calls <a class="el" href="classKProcess.html#a452a674ce8be325cae6d5def69a77007" title="Cleans up the communication links to the child after it has exited.">commClose()</a> and emits the <a class="el" href="classKProcess.html#a596356c0f7f45a34b5a701ae3c99ec3b" title="Emitted after the process has terminated when the process was run in the NotifyOnExit (==default opti...">processExited()</a> signal. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">state</td><td>the exit code of the process as returned by waitpid() </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00821">821</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<a class="anchor" id="a9e76575c5459566a4c2a1689df9a49e4"></a><!-- doxytag: member="KProcess::pty" ref="a9e76575c5459566a4c2a1689df9a49e4" args="() const " -->
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<td class="memname"><a class="el" href="classKPty.html">KPty</a> * KProcess::pty </td>
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<p>Obtains the pty object used by this process. </p>
<p>The return value is valid only after <a class="el" href="classKProcess.html#a9ab0370de452a51b31c4b435be62955c" title="Specify whether to create a pty (pseudo-terminal) for running the command.">setUsePty()</a> was used with a non-zero argument. The pty is open only while the process is running. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>a pointer to the pty object </dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00803">803</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<a class="anchor" id="a1ce049f3abcc805d6e5d44988451d32a"></a><!-- doxytag: member="KProcess::quote" ref="a1ce049f3abcc805d6e5d44988451d32a" args="(const QString &arg)" -->
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<td class="memname"><a class="elRef" href="qstring.html">QString</a> KProcess::quote </td>
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<p>This function can be used to quote an argument string such that the shell processes it properly. </p>
<p>This is e. g. necessary for user-provided file names which may contain spaces or quotes. It also prevents expansion of wild cards and environment variables. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">arg</td><td>the argument to quote </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>the quoted argument </dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.1 </dd></dl>
<p>Reimplemented in <a class="el" href="classKShellProcess.html#a78ade7b369ef8e3e3fa21a330d314313">KShellProcess</a>.</p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00809">809</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::receivedStderr </td>
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<td class="paramname"><em>proc</em>, </td>
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<td></td>
<td class="paramtype">char * </td>
<td class="paramname"><em>buffer</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>buflen</em> </td>
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<td></td><td><code> [signal]</code></td>
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<p>Emitted, when output from the child process has been received on stderr. </p>
<p>To actually get this signal, the Stderr communication link has to be turned on in <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a>.</p>
<p>You should copy the information contained in <code>buffer</code> to your private data structures before returning from the slot.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">proc</td><td>a pointer to the process that has received the data </td></tr>
<tr><td class="paramname">buffer</td><td>The data received. </td></tr>
<tr><td class="paramname">buflen</td><td>The number of bytes that are available. </td></tr>
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</dd>
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<td class="memname">void KProcess::receivedStdout </td>
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<td class="paramtype"><a class="el" href="classKProcess.html">KProcess</a> * </td>
<td class="paramname"><em>proc</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">char * </td>
<td class="paramname"><em>buffer</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>buflen</em> </td>
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<td></td><td><code> [signal]</code></td>
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<p>Emitted, when output from the child process has been received on stdout. </p>
<p>To actually get this signal, the Stdout communication link has to be turned on in <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a>.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">proc</td><td>a pointer to the process that has received the output </td></tr>
<tr><td class="paramname">buffer</td><td>The data received. </td></tr>
<tr><td class="paramname">buflen</td><td>The number of bytes that are available.</td></tr>
</table>
</dd>
</dl>
<p>You should copy the information contained in <code>buffer</code> to your private data structures before returning from the slot. Example: </p>
<div class="fragment"><pre class="fragment"> <a class="codeRef" href="qstring.html">QString</a> myBuf = <a class="codeRef" href="qstring.html#fromLatin1">QString::fromLatin1</a>(buffer, buflen);
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<td class="memname">void KProcess::receivedStdout </td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>len</em> </td>
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<td></td><td><code> [signal]</code></td>
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<p>Emitted when output from the child process has been received on stdout. </p>
<p>To actually get this signal, the Stdout communication link has to be turned on in <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a> and the NoRead flag must have been passed.</p>
<p>You will need to explicitly call <a class="el" href="classKProcess.html#a05e70e17b2da0677a4ac77c93a9f1eda" title="Resume processing of data from stdout of the child process.">resume()</a> after your call to <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a> to begin processing data from the child process' stdout. This is to ensure that this signal is not emitted when no one is connected to it, otherwise this signal will not be emitted.</p>
<p>The data still has to be read from file descriptor <code>fd</code>. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">fd</td><td>the file descriptor that provides the data </td></tr>
<tr><td class="paramname">len</td><td>the number of bytes that have been read from <code>fd</code> must be written here </td></tr>
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<p>Resume processing of data from stdout of the child process. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00654">654</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Returns whether the started process will drop any setuid/setgid privileges or whether it will keep them. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the process runs privileged </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00204">204</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setBinaryExecutable </td>
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<p>Specify the actual executable that should be started (first argument to execve) Normally the the first argument is the executable but you can override that with this function. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00250">250</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Adds the variable <code>name</code> to the process' environment. </p>
<p>This function must be called before starting the process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">name</td><td>the name of the environment variable </td></tr>
<tr><td class="paramname">value</td><td>the new value for the environment variable </td></tr>
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</dd>
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<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00171">171</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000047">Deprecated:</a></b></dt><dd>Use <a class="el" href="classKProcess.html#a622180f48f80ff03c7d29b2d6ae8fa70" title="Sets the executable and the command line argument list for this process.">operator<<()</a> instead.</dd></dl>
<p>Sets the executable to be started with this <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> object. Returns false if the process is currently running (in that case the executable remains unchanged).</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classKProcess.html#a622180f48f80ff03c7d29b2d6ae8fa70" title="Sets the executable and the command line argument list for this process.">operator<<()</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00255">255</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Sets the scheduling priority of the process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">prio</td><td>the new priority in the range -20 (high) to 19 (low). </td></tr>
</table>
</dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd>false on error; see setpriority(2) for possible reasons. </dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00210">210</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setRunPrivileged </td>
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<p>Controls whether the started process should drop any setuid/setgid privileges or whether it should keep them. </p>
<p>Note that this function is mostly a dummy, as the <a class="el" href="namespaceKDE.html" title="Namespace for general KDE functions.">KDE</a> libraries currently refuse to run with setuid/setgid privileges.</p>
<p>The default is false: drop privileges </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">keepPrivileges</td><td>true to keep the privileges </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00198">198</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">int KProcess::setupCommunication </td>
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<td class="paramname"><em>comm</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>This function is called from <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a> right before a fork() takes place. </p>
<p>According to the <code>comm</code> parameter this function has to initialize the in, out and err data members of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a>.</p>
<p>This function should return 1 if setting the needed communication channels was successful.</p>
<p>The default implementation is to create UNIX STREAM sockets for the communication, but you could reimplement this function to establish a TCP/IP communication for network communication, for example. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00874">874</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setupEnvironment </td>
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<p>Sets up the environment according to the data passed via <a class="el" href="classKProcess.html#ab04086e71ba6ca36b06b0148656b1b33" title="Adds the variable name to the process' environment.">setEnvironment()</a> </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00183">183</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setUsePty </td>
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<td class="paramname"><em>comm</em>, </td>
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<p>Specify whether to create a pty (pseudo-terminal) for running the command. </p>
<p>This function should be called before starting the process.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">comm</td><td>for which stdio handles to use a pty. Note that it is not allowed to specify Stdout and Stderr at the same time both here and to start (there is only one pty, so they cannot be distinguished). </td></tr>
<tr><td class="paramname">addUtmp</td><td>true if a utmp entry should be created for the pty </td></tr>
</table>
</dd>
</dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00790">790</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setUseShell </td>
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<p>Specify whether to start the command via a shell or directly. </p>
<p>The default is to start the command directly. If <code>useShell</code> is true <code>shell</code> will be used as shell, or if shell is empty, /bin/sh will be used.</p>
<p>When using a shell, the caller should make sure that all filenames etc. are properly quoted when passed as argument. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classKProcess.html#a1ce049f3abcc805d6e5d44988451d32a" title="This function can be used to quote an argument string such that the shell processes it properly...">quote()</a> </dd></dl>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">useShell</td><td>true if the command should be started via a shell </td></tr>
<tr><td class="paramname">shell</td><td>the path to the shell that will execute the process, or 0 to use /bin/sh. Use getenv("SHELL") to use the user's default shell, but note that doing so is usually a bad idea for shell compatibility reasons. </td></tr>
</table>
</dd>
</dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.1 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00765">765</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::setWorkingDirectory </td>
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<p>Changes the current working directory (CWD) of the process to be started. </p>
<p>This function must be called before starting the process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">dir</td><td>the new directory </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00177">177</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Checks whether the process was killed by a signal. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the process has already finished and has not exited "voluntarily", ie: it has been killed by a signal.</dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00600">600</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::slotChildError </td>
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<p>This slot gets activated when data from the child's stderr arrives. </p>
<p>It usually calls <a class="el" href="classKProcess.html#affc654d6fc0ecf1ce5477115d2960912" title="Called by slotChildError() this function copies data arriving from the child process' stderr to the r...">childError()</a>. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">fdno</td><td>the file descriptor for the output </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00738">738</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::slotChildOutput </td>
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<p>This slot gets activated when data from the child's stdout arrives. </p>
<p>It usually calls <a class="el" href="classKProcess.html#aab4789728c641923d6a568faf39794c8" title="Called by slotChildOutput() this function copies data arriving from the child process' stdout to the ...">childOutput()</a>. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">fdno</td><td>the file descriptor for the output </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00731">731</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::slotSendData </td>
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<p>Called when another bulk of data can be sent to the child's stdin. </p>
<p>If there is no more data to be sent to stdin currently available, this function must disable the <a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a> innot. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">dummy</td><td>ignore this argument </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00745">745</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">bool KProcess::start </td>
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<td class="paramtype"><a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">RunMode</a> </td>
<td class="paramname"><em>runmode</em> = <code>NotifyOnExit</code>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> </td>
<td class="paramname"><em>comm</em> = <code>NoCommunication</code> </td>
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<p>Starts the process. </p>
<p>For a detailed description of the various run modes and communication semantics, have a look at the general description of the <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> class. Note that if you use setUsePty( Stdout | Stderr, <bool> ), you cannot use Stdout | Stderr here - instead, use Stdout only to receive the mixed output.</p>
<p>The following problems could cause this function to return false:</p>
<ul>
<li>The process is already running. </li>
<li>The command line argument list is empty. </li>
<li>The the <code>comm</code> parameter is incompatible with the selected pty usage. </li>
<li>The starting of the process failed (could not fork). </li>
<li>The executable was not found.</li>
</ul>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">runmode</td><td>The Run-mode for the process. </td></tr>
<tr><td class="paramname">comm</td><td>Specifies which communication links should be established to the child process (stdin/stdout/stderr). By default, no communication takes place and the respective communication signals will never get emitted.</td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true on success, false on error (see above for error conditions) </dd></dl>
<p>Reimplemented in <a class="el" href="classKShellProcess.html#ab1e6d99ed99e0d59af307a4c9c3105ee">KShellProcess</a>.</p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00298">298</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<td class="memname">void KProcess::suspend </td>
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<p>Suspend processing of data from stdout of the child process. </p>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00648">648</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Suspend execution of the current thread until the child process dies or the timeout hits. </p>
<p>This function is not recommended for programs with a GUI. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">timeout</td><td>timeout in seconds. -1 means wait indefinitely. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the process exited, false if the timeout hit. </dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>3.2 </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00528">528</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Transmit data to the child process' stdin. </p>
<p>This function may return false in the following cases:</p>
<ul>
<li>The process is not currently running. This implies that you cannot use this function in Block mode.</li>
</ul>
<ul>
<li>Communication to stdin has not been requested in the <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a> call.</li>
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<li>Transmission of data to the child process by a previous call to <a class="el" href="classKProcess.html#a7693e31b6ac1ff3a67e3dba33c52b039" title="Transmit data to the child process' stdin.">writeStdin()</a> is still in progress.</li>
</ul>
<p>Please note that the data is sent to the client asynchronously, so when this function returns, the data might not have been processed by the child process. That means that you must not free <code>buffer</code> or call <a class="el" href="classKProcess.html#a7693e31b6ac1ff3a67e3dba33c52b039" title="Transmit data to the child process' stdin.">writeStdin()</a> again until either a <a class="el" href="classKProcess.html#ad8640fd7fd567c1c77542868fb6a4688" title="Emitted after all the data that has been specified by a prior call to writeStdin() has actually been ...">wroteStdin()</a> signal indicates that the data has been sent or a <a class="el" href="classKProcess.html#a596356c0f7f45a34b5a701ae3c99ec3b" title="Emitted after the process has terminated when the process was run in the NotifyOnExit (==default opti...">processExited()</a> signal shows that the child process is no longer alive.</p>
<p>If all the data has been sent to the client, the signal <a class="el" href="classKProcess.html#ad8640fd7fd567c1c77542868fb6a4688" title="Emitted after all the data that has been specified by a prior call to writeStdin() has actually been ...">wroteStdin()</a> will be emitted.</p>
<p>This function does not work when the process is <a class="el" href="classKProcess.html#a4720628748fbe8b2373837208ff7b947" title="Starts the process.">start()</a>ed in Block mode.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">buffer</td><td>the buffer to write </td></tr>
<tr><td class="paramname">buflen</td><td>the length of the buffer </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>false if an error has occurred </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8cpp_source.html#l00628">628</a> of file <a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a>.</p>
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<p>Emitted after all the data that has been specified by a prior call to <a class="el" href="classKProcess.html#a7693e31b6ac1ff3a67e3dba33c52b039" title="Transmit data to the child process' stdin.">writeStdin()</a> has actually been written to the child process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">proc</td><td>a pointer to the process </td></tr>
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</dd>
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<hr/><h2>Friends And Related Function Documentation</h2>
<a class="anchor" id="a7baecdd52a8731cbc0a80d5754393ba3"></a><!-- doxytag: member="KProcess::KProcessController" ref="a7baecdd52a8731cbc0a80d5754393ba3" args="" -->
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<td class="memname">friend class <a class="el" href="classKProcessController.html">KProcessController</a><code> [friend]</code></td>
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<p><a class="el" href="classKProcessController.html" title="Used internally by KProcess.">KProcessController</a> is a friend of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a> because it has to have access to various data members. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00880">880</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<hr/><h2>Member Data Documentation</h2>
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<td class="memname"><a class="elRef" href="qvaluelist.html">QValueList</a><<a class="elRef" href="qcstring.html">QCString</a>> <a class="el" href="classKProcess.html#a7a247677230d9fb9ad0b97037e4b770f">KProcess::arguments</a><code> [protected]</code></td>
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<p>The list of the process' command line arguments. </p>
<p>The first entry in this list is the executable itself. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00691">691</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<td class="memname"><a class="el" href="classKProcess.html#a31e69eb366082bb93bbdc31e6e281019">Communication</a> <a class="el" href="classKProcess.html#a07250914e31e67f7668ccd6924a4016a">KProcess::communication</a><code> [protected]</code></td>
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<p>Lists the communication links that are activated for the child process. </p>
<p>Should not be modified from derived classes. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00847">847</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a1a5bc732f828c6b98431e1bac364b2e6"></a><!-- doxytag: member="KProcess::err" ref="a1a5bc732f828c6b98431e1bac364b2e6" args="[2]" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a1a5bc732f828c6b98431e1bac364b2e6">KProcess::err</a>[2]<code> [protected]</code></td>
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<p>The socket descriptors for stderr. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00828">828</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="ac7c7609ebd3ce7c0cd3bba4932ab5fc3"></a><!-- doxytag: member="KProcess::errnot" ref="ac7c7609ebd3ce7c0cd3bba4932ab5fc3" args="" -->
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<td class="memname"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a>* <a class="el" href="classKProcess.html#ac7c7609ebd3ce7c0cd3bba4932ab5fc3">KProcess::errnot</a><code> [protected]</code></td>
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<p>The socket notifier for err[0]. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00841">841</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a0b6a4ec5df514967736ca95a927e4bcb"></a><!-- doxytag: member="KProcess::in" ref="a0b6a4ec5df514967736ca95a927e4bcb" args="[2]" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a0b6a4ec5df514967736ca95a927e4bcb">KProcess::in</a>[2]<code> [protected]</code></td>
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<p>The socket descriptors for stdin. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00824">824</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a5e5c9b65122b0e8ffc9bb9bd178e1af3"></a><!-- doxytag: member="KProcess::innot" ref="a5e5c9b65122b0e8ffc9bb9bd178e1af3" args="" -->
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<td class="memname"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a>* <a class="el" href="classKProcess.html#a5e5c9b65122b0e8ffc9bb9bd178e1af3">KProcess::innot</a><code> [protected]</code></td>
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<p>The socket notifier for in[1]. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00833">833</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a6c04f1b4b85da186000cbb00601c7a7d"></a><!-- doxytag: member="KProcess::input_data" ref="a6c04f1b4b85da186000cbb00601c7a7d" args="" -->
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<td class="memname">const char* <a class="el" href="classKProcess.html#a6c04f1b4b85da186000cbb00601c7a7d">KProcess::input_data</a><code> [protected]</code></td>
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<p>The buffer holding the data that has to be sent to the child. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00866">866</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a964a2514e86ca1c27819647a65cdf2ac"></a><!-- doxytag: member="KProcess::input_sent" ref="a964a2514e86ca1c27819647a65cdf2ac" args="" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a964a2514e86ca1c27819647a65cdf2ac">KProcess::input_sent</a><code> [protected]</code></td>
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<p>The number of bytes already transmitted. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00870">870</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a932e8f8fa4a4fbd502f738926d4ad3c1"></a><!-- doxytag: member="KProcess::input_total" ref="a932e8f8fa4a4fbd502f738926d4ad3c1" args="" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a932e8f8fa4a4fbd502f738926d4ad3c1">KProcess::input_total</a><code> [protected]</code></td>
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<p>The total length of input_data. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00874">874</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a78fa30f3005c3aa6d5b257d255b49b1e"></a><!-- doxytag: member="KProcess::keepPrivs" ref="a78fa30f3005c3aa6d5b257d255b49b1e" args="" -->
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<td class="memname">bool <a class="el" href="classKProcess.html#a78fa30f3005c3aa6d5b257d255b49b1e">KProcess::keepPrivs</a><code> [protected]</code></td>
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<p>If false, the child process' effective uid & gid will be reset to the real values. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classKProcess.html#a101724b33e03545b1495032b882e6ad4" title="Controls whether the started process should drop any setuid/setgid privileges or whether it should ke...">setRunPrivileged()</a> </dd></dl>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00729">729</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a1f897b0e8827f91dbb5e48cd172fc592"></a><!-- doxytag: member="KProcess::out" ref="a1f897b0e8827f91dbb5e48cd172fc592" args="[2]" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a1f897b0e8827f91dbb5e48cd172fc592">KProcess::out</a>[2]<code> [protected]</code></td>
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<p>The socket descriptors for stdout. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00820">820</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a26538d7ebe7594e951dcb8921f99126a"></a><!-- doxytag: member="KProcess::outnot" ref="a26538d7ebe7594e951dcb8921f99126a" args="" -->
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<td class="memname"><a class="elRef" href="qsocketnotifier.html">QSocketNotifier</a>* <a class="el" href="classKProcess.html#a26538d7ebe7594e951dcb8921f99126a">KProcess::outnot</a><code> [protected]</code></td>
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<p>The socket notifier for out[0]. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00837">837</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a7d0e8e183be85db3acb793e14d8efd87"></a><!-- doxytag: member="KProcess::pid_" ref="a7d0e8e183be85db3acb793e14d8efd87" args="" -->
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<td class="memname">pid_t <a class="el" href="classKProcess.html#a7d0e8e183be85db3acb793e14d8efd87">KProcess::pid_</a><code> [protected]</code></td>
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<p>The PID of the currently running process. </p>
<p>You should not modify this data member in derived classes. Please use <a class="el" href="classKProcess.html#a3fa6c7307d649ba7b73e1a111fc91d9b" title="Returns the process id of the process.">pid()</a> instead of directly accessing this member since it will probably be made private in later versions of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00712">712</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="afd1ff53b0689db4bb6d59170c8ac685d"></a><!-- doxytag: member="KProcess::run_mode" ref="afd1ff53b0689db4bb6d59170c8ac685d" args="" -->
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<td class="memname"><a class="el" href="classKProcess.html#a2fbcd413da7eb360ac1a71761f1631b7">RunMode</a> <a class="el" href="classKProcess.html#afd1ff53b0689db4bb6d59170c8ac685d">KProcess::run_mode</a><code> [protected]</code></td>
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<p>How to run the process (Block, NotifyOnExit, DontCare). </p>
<p>You should not modify this data member directly from derived classes. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00696">696</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a0e85361e34f384490630e838de3ee060"></a><!-- doxytag: member="KProcess::runs" ref="a0e85361e34f384490630e838de3ee060" args="" -->
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<td class="memname">bool <a class="el" href="classKProcess.html#a0e85361e34f384490630e838de3ee060">KProcess::runs</a><code> [protected]</code></td>
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<p>true if the process is currently running. </p>
<p>You should not modify this data member directly from derived classes. Please use <a class="el" href="classKProcess.html#ad708457d8072be8ec7471dfea8223bd0" title="Checks whether the process is running.">isRunning()</a> for reading the value of this data member since it will probably be made private in later versions of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00703">703</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<a class="anchor" id="a9ba7b8b228ee6796dae2db3d6ddcebda"></a><!-- doxytag: member="KProcess::status" ref="a9ba7b8b228ee6796dae2db3d6ddcebda" args="" -->
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<td class="memname">int <a class="el" href="classKProcess.html#a9ba7b8b228ee6796dae2db3d6ddcebda">KProcess::status</a><code> [protected]</code></td>
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<p>The process' exit status as returned by waitpid(). </p>
<p>You should not modify the value of this data member from derived classes. You should rather use <a class="el" href="classKProcess.html#afd6932dd27dc8a9efc9b0946a5ec6a55" title="Returns the exit status of the process.">exitStatus()</a> than accessing this data member directly since it will probably be made private in further versions of <a class="el" href="classKProcess.html" title="Child process invocation, monitoring and control.">KProcess</a>. </p>
<p>Definition at line <a class="el" href="kprocess_8h_source.html#l00721">721</a> of file <a class="el" href="kprocess_8h_source.html">kprocess.h</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="kprocess_8h_source.html">kprocess.h</a></li>
<li><a class="el" href="kprocess_8cpp_source.html">kprocess.cpp</a></li>
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