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<a href="#pub-types">Public Types</a> &#124;
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<p>A output stream to enable certain levels of verbosity.  
 <a href="classvstream.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="msgstream_8hh_source.html">mia/core/msgstream.hh</a>&gt;</code></p>
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Public Types</h2></td></tr>
<tr class="memitem:a86258e3d4f4ea9844a8c0a25a0103ede"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a86258e3d4f4ea9844a8c0a25a0103ede">Level</a> { <br/>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aa98f6cc7eac3081b9c35c8997c1c40b6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#aa98f6cc7eac3081b9c35c8997c1c40b6">flush</a> ()</td></tr>
<tr class="memdesc:aa98f6cc7eac3081b9c35c8997c1c40b6"><td class="mdescLeft">&#160;</td><td class="mdescRight">write pending output  <a href="#aa98f6cc7eac3081b9c35c8997c1c40b6">More...</a><br/></td></tr>
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<tr class="memitem:a741a6a28835011ccfdf3b089f156a6f3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classvstream.html#a86258e3d4f4ea9844a8c0a25a0103ede">vstream::Level</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a741a6a28835011ccfdf3b089f156a6f3">get_level</a> () const </td></tr>
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<tr class="memitem:ab7d797514270cd652efaa4c8299dbe94"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#ab7d797514270cd652efaa4c8299dbe94">operator std::ostream &amp;</a> ()</td></tr>
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<tr class="memitem:a12c20073380c786feb7829bc71252305"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classvstream.html">vstream</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a12c20073380c786feb7829bc71252305">operator&lt;&lt;</a> (<a class="el" href="classvstream.html#a86258e3d4f4ea9844a8c0a25a0103ede">Level</a> const l)</td></tr>
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<tr class="memitem:a0449085e62c569df4d058c7aac4754d1"><td class="memTemplParams" colspan="2">template&lt;class T &gt; </td></tr>
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<tr class="memitem:ae8420c54faf999d675c1a25259ca68bf"><td class="memItemLeft" align="right" valign="top">std::ostream &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#ae8420c54faf999d675c1a25259ca68bf">set_stream</a> (std::ostream &amp;os)</td></tr>
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<tr class="memitem:a551b53913fb53d1e4de8861bb9f9b0db"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a551b53913fb53d1e4de8861bb9f9b0db">set_verbosity</a> (<a class="el" href="classvstream.html#a86258e3d4f4ea9844a8c0a25a0103ede">Level</a> l)</td></tr>
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<tr class="memitem:ae57001859adb8042611cec62c523ed53"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#ae57001859adb8042611cec62c523ed53">show_debug</a> () const </td></tr>
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<tr class="memitem:a4812258857c93bd6190315754ff7258b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a4812258857c93bd6190315754ff7258b">shows</a> (<a class="el" href="classvstream.html#a86258e3d4f4ea9844a8c0a25a0103ede">Level</a> l) const </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a8a3cd883626223e9ab5d66f722d1ac69"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classvstream.html">vstream</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a8a3cd883626223e9ab5d66f722d1ac69">instance</a> ()</td></tr>
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<tr class="memitem:a4e73b4856bfc7b60500fdda5af49ad12"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvstream.html#a4e73b4856bfc7b60500fdda5af49ad12">set_output_target</a> (std::ostream *os)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A output stream to enable certain levels of verbosity. </p>
<p>This class impelemtns a std::ostream like class to output messages during run-time, supporting various levels of verbosity. The class is implemened as a singleton. On initialization it is set to use std::cerr as output stream, but this can be replaced by any type implementing the std::ostream interface. </p>
<dl class="section remark"><dt>Remarks</dt><dd>if -DNDEBUG is set, the levels <em>debug</em> and <em>trace</em> are not compiled in - i.e. the corresponding output operators are replaced by dummy functions that should be optimized away. </dd></dl>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00062">62</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
<a class="anchor" id="a86258e3d4f4ea9844a8c0a25a0103ede"></a>
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<p>Output verbosity level threshhold, ml_trace is the lowest threshhold and ml_fatal the highest. Output is written, when the output threshold is above or equal to the one set within the output stream. </p>
<table class="fieldtable">
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<p>write trace of function calls and higher, disabled with -DNDEBUG </p>
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<p>write debugging information and higher, disabled with -DNDEBUG </p>
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<p>write additional info about the data processed and higher </p>
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<p>write process status messages and higher </p>
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<p>write warnings and higher </p>
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<p>write failture messages (for tests) and higher </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a86258e3d4f4ea9844a8c0a25a0103edea21c878842989355e0a7b8232dcf7157b"></a>ml_error</em>&#160;</td><td class="fielddoc">
<p>write non-fatal error messages and higher </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a86258e3d4f4ea9844a8c0a25a0103edeace0be6ed6976807e581699e45324f618"></a>ml_fatal</em>&#160;</td><td class="fielddoc">
<p>write only fatal error messages </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a86258e3d4f4ea9844a8c0a25a0103edeac2858558a7812f3363a7cca94e96c4a3"></a>ml_undefined</em>&#160;</td><td class="fielddoc">
<p>stopper </p>
</td></tr>
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<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00069">69</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
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<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
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<p>write pending output </p>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00274">274</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

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<dl class="section return"><dt>Returns</dt><dd>the curent verbosity level </dd></dl>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00269">269</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

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<p>initialise a stream that writes only messages above a certain verbosity level </p>

<p>Referenced by <a class="el" href="msgstream_8hh_source.html#l00221">CTrace::CTrace()</a>, <a class="el" href="msgstream_8hh_source.html#l00213">cvdebug()</a>, <a class="el" href="msgstream_8hh_source.html#l00305">cverr()</a>, <a class="el" href="msgstream_8hh_source.html#l00295">cvfail()</a>, <a class="el" href="msgstream_8hh_source.html#l00285">cvfatal()</a>, <a class="el" href="msgstream_8hh_source.html#l00256">cvinfo()</a>, <a class="el" href="msgstream_8hh_source.html#l00325">cvmsg()</a>, <a class="el" href="msgstream_8hh_source.html#l00315">cvwarn()</a>, and <a class="el" href="msgstream_8hh_source.html#l00228">CTrace::~CTrace()</a>.</p>

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<p>Transparent conversion operator to an std::ostream. </p>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00148">148</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

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<p>a special handling to set the output level "inline" </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">l</td><td>the level of the following messages </td></tr>
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template&lt;class T &gt; </div>
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<p>general output routine; output is only given, if the data verbosity level is set higher or equal to the stream verbosity level. </p>
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    <tr><td class="paramname">text</td><td>the text to be written to the stream </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>a reference to this object </dd></dl>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00125">125</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

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<p>A funny construct to enable std::endl to work on this stream idea of Dave Brondsema: <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8567">http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8567</a> </p>

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<p>Set the output target with which the stream should be initialized if std::cerr is not to be used. </p>

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<p>sets the output stream </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">os</td><td></td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the old output stream </dd></dl>

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<p>set the verbosity output level </p>
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<dl class="section return"><dt>Returns</dt><dd>true if the output level is equal or below "debug" </dd></dl>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00262">262</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

<p>References <a class="el" href="msgstream_8hh_source.html#l00071">ml_debug</a>, and <a class="el" href="msgstream_8hh_source.html#l00179">shows()</a>.</p>

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<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">l</td><td>verbosity level </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true if cverb will show the given verbosity level </dd></dl>

<p>Definition at line <a class="el" href="msgstream_8hh_source.html#l00179">179</a> of file <a class="el" href="msgstream_8hh_source.html">msgstream.hh</a>.</p>

<p>Referenced by <a class="el" href="msgstream_8hh_source.html#l00262">show_debug()</a>.</p>

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<hr/>The documentation for this class was generated from the following file:<ul>
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