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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>SystemTap: I/O</title>
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<h1>I/O</h1>I/O functions.
<a href="#_details">More...</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__io.html#ga0">dlog</a> (const char *fmt,...)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Logs Data. <a href="#ga0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__io.html#ga1">_stp_print</a> (const char *fmt,...)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Prints to the trace buffer. <a href="#ga1"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__io.html#ga2">_stp_print_str</a> (char *str)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Prints to the trace buffer. <a href="#ga2"></a><br></td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
I/O functions.
<p>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="ga1" doxytag="io.c::_stp_print"></a><p>
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<td class="md" nowrap valign="top">void _stp_print </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname" nowrap> <em>fmt</em>, </td>
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<td class="md" nowrap> </td>
<td class="mdname" nowrap> <em>...</em></td>
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<td class="md">) </td>
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Prints to the trace buffer.
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This function uses the same formatting as printk. It currently writes to the system log.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>fmt</em> </td><td>A variable number of args. </td></tr>
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</dl>
<p>
<dl compact><dt><b><a class="el" href="todo.html#_todo000004">Todo:</a></b></dt><dd>Needs replaced with something much faster that does not use the system log. </dd></dl>
<p>
Definition at line <a class="el" href="io_8c-source.html#l00043">43</a> of file <a class="el" href="io_8c-source.html">io.c</a>.
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Referenced by <a class="el" href="sym_8c-source.html#l00059">_stp_symbol_print()</a>. </td>
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<a class="anchor" name="ga2" doxytag="io.c::_stp_print_str"></a><p>
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<td class="md" nowrap valign="top">void _stp_print_str </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">char * </td>
<td class="mdname1" valign="top" nowrap> <em>str</em> </td>
<td class="md" valign="top"> ) </td>
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<p>
Prints to the trace buffer.
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This function will write a string to the trace buffer. It currently writes to the system log.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>str</em> </td><td>String. </td></tr>
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</dl>
<p>
<dl compact><dt><b><a class="el" href="todo.html#_todo000005">Todo:</a></b></dt><dd>Needs replaced with something much faster that does not use the system log. </dd></dl>
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Definition at line <a class="el" href="io_8c-source.html#l00060">60</a> of file <a class="el" href="io_8c-source.html">io.c</a>. </td>
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<a class="anchor" name="ga0" doxytag="io.c::dlog"></a><p>
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<td class="md" nowrap valign="top">void dlog </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname" nowrap> <em>fmt</em>, </td>
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<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap> </td>
<td class="mdname" nowrap> <em>...</em></td>
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<td class="md"></td>
<td class="md">) </td>
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Logs Data.
<p>
This function is compatible with printk. In fact it currently sends all output to vprintk, after sending "STP: ". This allows us to easily detect SystemTap output in the log file.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>fmt</em> </td><td>A variable number of args. </td></tr>
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</dl>
<p>
<dl compact><dt><b><a class="el" href="bug.html#_bug000003">Bug:</a></b></dt><dd>Lines are limited in length by printk buffer. If there is no newline in the format string, then other syslog output could get appended to the SystemTap line.</dd></dl>
<p>
<dl compact><dt><b><a class="el" href="todo.html#_todo000003">Todo:</a></b></dt><dd>Either deprecate or redefine this as a way to log debug or status messages, separate from the normal program output. </dd></dl>
<p>
Definition at line <a class="el" href="io_8c-source.html#l00025">25</a> of file <a class="el" href="io_8c-source.html">io.c</a>.
<p>
Referenced by <a class="el" href="map_8c-source.html#l00813">_stp_list_clear()</a>, <a class="el" href="probes_8c-source.html#l00032">_stp_register_jprobes()</a>, <a class="el" href="probes_8c-source.html#l00077">_stp_register_kprobes()</a>, <a class="el" href="probes_8c-source.html#l00018">_stp_unregister_jprobes()</a>, and <a class="el" href="probes_8c-source.html#l00063">_stp_unregister_kprobes()</a>. </td>
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