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slsDetectorPackage/manual/docs/html/slsDetectorUsersDocs/mainReceiver_8cpp.html
Dhanya Maliakal 35dcdd62c9 links to libraries in manual
2017-08-28 14:15:57 +02:00

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<h1>mainReceiver.cpp File Reference</h1><code>#include &quot;sls_receiver_defs.h&quot;</code><br/>
<code>#include &quot;<a class="el" href="slsReceiverUsers_8h_source.html">slsReceiverUsers.h</a>&quot;</code><br/>
<code>#include &lt;iostream&gt;</code><br/>
<code>#include &lt;string.h&gt;</code><br/>
<code>#include &lt;signal.h&gt;</code><br/>
<code>#include &lt;cstdlib&gt;</code><br/>
<code>#include &lt;sys/types.h&gt;</code><br/>
<code>#include &lt;sys/wait.h&gt;</code><br/>
<code>#include &lt;string&gt;</code><br/>
<p><a href="mainReceiver_8cpp_source.html">Go to the source code of this file.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#aa55605484e783ee738b6f4e7b251cbee">NUM_RECEIVERS</a>&nbsp;&nbsp;&nbsp;1</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a2a4a8ad299b56605e3ee1ebb0950ac5c">START_TCP_PORT</a>&nbsp;&nbsp;&nbsp;1954</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#aeac6a4b86729a7e07100fb58600d6481">PRINT_IN_COLOR</a>(c, f,...)&nbsp;&nbsp;&nbsp;printf (&quot;\033[%dm&quot; f RESET, 30 + c+1, ##__VA_ARGS__)</td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#acdb2aab1ff93ceea5eb097337a200008">sigChildExitedHandler</a> (int sig)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#ac72dad9b593583bd4bf508a979c00f70">sigInterruptHandler</a> (int p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a1ec49915ff49957985ebfe6ccc5cd1b3">StartAcq</a> (char *filepath, char *filename, uint64_t fileindex, uint32_t datasize, void *p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a013a16dd72eca4216a42196c4d9c0335">AcquisitionFinished</a> (uint64_t frames, void *p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a68d89c0f64de361efc31ae21513b86cb">GetData</a> (uint64_t frameNumber, uint32_t expLength, uint32_t packetNumber, uint64_t bunchId, uint64_t timestamp, uint16_t modId, uint16_t xCoord, uint16_t yCoord, uint16_t zCoord, uint32_t debug, uint16_t roundRNumber, uint8_t detType, uint8_t version, char *datapointer, uint32_t datasize, void *p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a0ddf1224851353fc92bfbff6f499fa97">main</a> (int argc, char *argv[])</td></tr>
<tr><td colspan="2"><h2>Variables</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">pid_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#adbe4cfbc29a961cebc69041b896c7304">childPid</a> [NUM_RECEIVERS]</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a0d26a166bb416ff34512de6fe9e098bd">keeprunning</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a9a5e6d0743c685444bb74ecfbb0e78c4">numrunning</a></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>This file is an example of how to implement the <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks...">slsReceiverUsers</a> class You can compile it linking it to the slsReceiver library</p>
<p>g++ <a class="el" href="mainReceiver_8cpp.html">mainReceiver.cpp</a> -L lib -lSlsReceiver -L/usr/lib64/ -L lib2 -lzmq -pthread -lrt -lm -lstdc++</p>
<p>where,</p>
<p>lib is the location of lSlsReceiver.so</p>
<p>lib2 is the location of the libzmq.a. [ libzmq.a is required only when using data call backs and enabling data streaming from receiver to client. It is linked in manual/manual-api from slsReceiverSoftware/include ] </p>
<p>Definition in file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="aa55605484e783ee738b6f4e7b251cbee"></a><!-- doxytag: member="mainReceiver.cpp::NUM_RECEIVERS" ref="aa55605484e783ee738b6f4e7b251cbee" args="" -->
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<td class="memname">#define NUM_RECEIVERS&nbsp;&nbsp;&nbsp;1</td>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00034">34</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="aeac6a4b86729a7e07100fb58600d6481"></a><!-- doxytag: member="mainReceiver.cpp::PRINT_IN_COLOR" ref="aeac6a4b86729a7e07100fb58600d6481" args="(c, f,...)" -->
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<td class="memname">#define PRINT_IN_COLOR</td>
<td>(</td>
<td class="paramtype">c, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">f, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> <em>...</em>&nbsp;</td>
<td class="paramname"></td>
<td>&nbsp;)&nbsp;</td>
<td>&nbsp;&nbsp;&nbsp;printf (&quot;\033[%dm&quot; f RESET, 30 + c+1, ##__VA_ARGS__)</td>
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<p>Define Colors to print data call back in different colors for different recievers </p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00038">38</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a2a4a8ad299b56605e3ee1ebb0950ac5c"></a><!-- doxytag: member="mainReceiver.cpp::START_TCP_PORT" ref="a2a4a8ad299b56605e3ee1ebb0950ac5c" args="" -->
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<td class="memname">#define START_TCP_PORT&nbsp;&nbsp;&nbsp;1954</td>
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<p>Define TCP Port of First Receiver, others are incremented by 1 </p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00036">36</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="a013a16dd72eca4216a42196c4d9c0335"></a><!-- doxytag: member="mainReceiver.cpp::AcquisitionFinished" ref="a013a16dd72eca4216a42196c4d9c0335" args="(uint64_t frames, void *p)" -->
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<td class="memname">void AcquisitionFinished </td>
<td>(</td>
<td class="paramtype">uint64_t&nbsp;</td>
<td class="paramname"> <em>frames</em>, </td>
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<td class="paramtype">void *&nbsp;</td>
<td class="paramname"> <em>p</em></td><td>&nbsp;</td>
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<td>)</td>
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<p>Acquisition Finished Call back </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>frames</em>&nbsp;</td><td>Number of frames caught </td></tr>
<tr><td valign="top"></td><td valign="top"><em>p</em>&nbsp;</td><td>pointer to object </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00093">93</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a68d89c0f64de361efc31ae21513b86cb"></a><!-- doxytag: member="mainReceiver.cpp::GetData" ref="a68d89c0f64de361efc31ae21513b86cb" args="(uint64_t frameNumber, uint32_t expLength, uint32_t packetNumber, uint64_t bunchId, uint64_t timestamp, uint16_t modId, uint16_t xCoord, uint16_t yCoord, uint16_t zCoord, uint32_t debug, uint16_t roundRNumber, uint8_t detType, uint8_t version, char *datapointer, uint32_t datasize, void *p)" -->
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<td class="memname">void GetData </td>
<td>(</td>
<td class="paramtype">uint64_t&nbsp;</td>
<td class="paramname"> <em>frameNumber</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&nbsp;</td>
<td class="paramname"> <em>expLength</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&nbsp;</td>
<td class="paramname"> <em>packetNumber</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint64_t&nbsp;</td>
<td class="paramname"> <em>bunchId</em>, </td>
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<td class="paramtype">uint64_t&nbsp;</td>
<td class="paramname"> <em>timestamp</em>, </td>
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<td class="paramtype">uint16_t&nbsp;</td>
<td class="paramname"> <em>modId</em>, </td>
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<td class="paramtype">uint16_t&nbsp;</td>
<td class="paramname"> <em>xCoord</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint16_t&nbsp;</td>
<td class="paramname"> <em>yCoord</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint16_t&nbsp;</td>
<td class="paramname"> <em>zCoord</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&nbsp;</td>
<td class="paramname"> <em>debug</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint16_t&nbsp;</td>
<td class="paramname"> <em>roundRNumber</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>detType</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>version</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">char *&nbsp;</td>
<td class="paramname"> <em>datapointer</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t&nbsp;</td>
<td class="paramname"> <em>datasize</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void *&nbsp;</td>
<td class="paramname"> <em>p</em></td><td>&nbsp;</td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<p>Get Receiver Data Call back Prints in different colors(for each receiver process) the different headers for each image call back. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>frameNumber</em>&nbsp;</td><td>frame number </td></tr>
<tr><td valign="top"></td><td valign="top"><em>expLength</em>&nbsp;</td><td>real time exposure length (in 100ns) or sub frame number (Eiger 32 bit mode only) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>packetNumber</em>&nbsp;</td><td>number of packets caught for this frame </td></tr>
<tr><td valign="top"></td><td valign="top"><em>bunchId</em>&nbsp;</td><td>bunch id from beamline </td></tr>
<tr><td valign="top"></td><td valign="top"><em>timestamp</em>&nbsp;</td><td>time stamp in 10MHz clock (not implemented for most) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>modId</em>&nbsp;</td><td>module id (not implemented for most) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>xCoord</em>&nbsp;</td><td>x coordinates (detector id in 1D) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>yCoord</em>&nbsp;</td><td>y coordinates (not implemented) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>zCoord</em>&nbsp;</td><td>z coordinates (not implemented) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>debug</em>&nbsp;</td><td>debug values if any </td></tr>
<tr><td valign="top"></td><td valign="top"><em>roundRNumber</em>&nbsp;</td><td>(not implemented) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>detType</em>&nbsp;</td><td>detector type see :: detectorType </td></tr>
<tr><td valign="top"></td><td valign="top"><em>version</em>&nbsp;</td><td>version of standard header (structure format) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>datapointer</em>&nbsp;</td><td>pointer to data </td></tr>
<tr><td valign="top"></td><td valign="top"><em>datasize</em>&nbsp;</td><td>data size in bytes </td></tr>
<tr><td valign="top"></td><td valign="top"><em>p</em>&nbsp;</td><td>pointer to object </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00117">117</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a0ddf1224851353fc92bfbff6f499fa97"></a><!-- doxytag: member="mainReceiver.cpp::main" ref="a0ddf1224851353fc92bfbff6f499fa97" args="(int argc, char *argv[])" -->
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<td class="memname">int main </td>
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<p>Example of main program using the <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks...">slsReceiverUsers</a> class</p>
<ul>
<li>Defines in file for:<ul>
<li>Default Number of receivers is 1</li>
<li>Default Start TCP port is 1954 </li>
</ul>
</li>
</ul>
<p><ul>
<li>set default values: child process pid values to -1, keeprunning to true, numrunning to 0</li>
</ul>
<ul>
<li>Catch signal SIGINT to close files and call destructors properly</li>
</ul>
<ul>
<li>wait for all the SIGCHILD signals and decrease numrunningeach time a child process exits</li>
</ul>
<ul>
<li>loop over number of receivers</li>
</ul>
<ul>
<li>fork process to create child process</li>
</ul>
<ul>
<li>if fork failed, raise SIGINT and kill all receiver objects</li>
</ul>
<ul>
<li>if child process</li>
</ul>
<ul>
<li>create <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks...">slsReceiverUsers</a> object with appropriate arguments (START_TCP_PORT incrementing by 1</li>
</ul>
<ul>
<li>register callbacks. remember to set file write enable to 0 (using the client) if we should not write files and you will write data using the callbacks</li>
</ul>
<ul>
<li>Call back for start acquisition</li>
</ul>
<ul>
<li>Call back for acquisition finished</li>
</ul>
<ul>
<li>start tcp server thread</li>
</ul>
<ul>
<li>as long as keeprunning is true, usleep for a second</li>
</ul>
<ul>
<li>interrupt caught, delete <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks...">slsReceiverUsers</a> object and exit</li>
</ul>
<ul>
<li>parent process, increment number of running processes</li>
</ul>
<ul>
<li>Print Ready and Instructions how to exit</li>
</ul>
<ul>
<li>Parent process waits for all child processes to exit by sleeping till numrunning is 0 </li>
</ul>
</p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00140">140</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="acdb2aab1ff93ceea5eb097337a200008"></a><!-- doxytag: member="mainReceiver.cpp::sigChildExitedHandler" ref="acdb2aab1ff93ceea5eb097337a200008" args="(int sig)" -->
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<p>Child Exit Signal Interrupt Handler When a child process exits, this function is called, blocks until all child processes exit &amp; decreases the variable indicating number of running processes </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>sig</em>&nbsp;</td><td>signal enum </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00055">55</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="ac72dad9b593583bd4bf508a979c00f70"></a><!-- doxytag: member="mainReceiver.cpp::sigInterruptHandler" ref="ac72dad9b593583bd4bf508a979c00f70" args="(int p)" -->
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<p>Control+C Interrupt Handler Sets the variable keeprunning to false, to let all the processes know to exit properly </p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00065">65</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a1ec49915ff49957985ebfe6ccc5cd1b3"></a><!-- doxytag: member="mainReceiver.cpp::StartAcq" ref="a1ec49915ff49957985ebfe6ccc5cd1b3" args="(char *filepath, char *filename, uint64_t fileindex, uint32_t datasize, void *p)" -->
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<td class="memname">int StartAcq </td>
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<td class="paramtype">char *&nbsp;</td>
<td class="paramname"> <em>filepath</em>, </td>
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<td class="paramtype">char *&nbsp;</td>
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<td class="paramtype">uint32_t&nbsp;</td>
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<p>Start Acquisition Call back slsReceiver writes data if file write enabled. Users get data to write using call back if registerCallBackRawDataReady is registered. </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>filepath</em>&nbsp;</td><td>file path </td></tr>
<tr><td valign="top"></td><td valign="top"><em>filename</em>&nbsp;</td><td>file name </td></tr>
<tr><td valign="top"></td><td valign="top"><em>fileindex</em>&nbsp;</td><td>file index </td></tr>
<tr><td valign="top"></td><td valign="top"><em>datasize</em>&nbsp;</td><td>data size in bytes </td></tr>
<tr><td valign="top"></td><td valign="top"><em>p</em>&nbsp;</td><td>pointer to object </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>ignored </dd></dl>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00080">80</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<hr/><h2>Variable Documentation</h2>
<a class="anchor" id="adbe4cfbc29a961cebc69041b896c7304"></a><!-- doxytag: member="mainReceiver.cpp::childPid" ref="adbe4cfbc29a961cebc69041b896c7304" args="[NUM_RECEIVERS]" -->
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<td class="memname">pid_t <a class="el" href="mainReceiver_8cpp.html#adbe4cfbc29a961cebc69041b896c7304">childPid</a>[NUM_RECEIVERS]</td>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00041">41</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a0d26a166bb416ff34512de6fe9e098bd"></a><!-- doxytag: member="mainReceiver.cpp::keeprunning" ref="a0d26a166bb416ff34512de6fe9e098bd" args="" -->
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<td class="memname">bool <a class="el" href="mainReceiver_8cpp.html#a0d26a166bb416ff34512de6fe9e098bd">keeprunning</a></td>
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<p>Variable is true to continue running, set to false upon interrupt </p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00043">43</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a9a5e6d0743c685444bb74ecfbb0e78c4"></a><!-- doxytag: member="mainReceiver.cpp::numrunning" ref="a9a5e6d0743c685444bb74ecfbb0e78c4" args="" -->
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<td class="memname">int <a class="el" href="mainReceiver_8cpp.html#a9a5e6d0743c685444bb74ecfbb0e78c4">numrunning</a></td>
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<p>Variable indicating number of child processes running </p>
<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00045">45</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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