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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>SystemTap: SystemTap Runtime Library</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<div class="qindex"><a class="qindex" href="index.html">Intro</a> | <a class="qindex" href="globals_func.html">Functions</a> | <a class="qindex" href="globals_defs.html">Defines</a> | <a class="qindex" href="globals_enum.html">Enumerations</a> | <a class="qindex" href="globals_eval.html">Enumeration Values</a></div>
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<h1>alloc.h File Reference</h1>
<p>
<a href="alloc_8h-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="alloc_8h.html#a7">errorcode</a> { <a class="el" href="alloc_8h.html#a7a0">ERR_NONE</a> = 0,
<a class="el" href="alloc_8h.html#a7a1">ERR_NO_MEM</a>
}</td></tr>
<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="alloc_8h.html#a2">_stp_alloc</a> (size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocates memory within a probe. <a href="#a2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="alloc_8h.html#a3">_stp_calloc</a> (size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocates and clears memory within a probe. <a href="#a3"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="alloc_8h.html#a4">_stp_valloc</a> (size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allocates and clears memory outside a probe. <a href="#a4"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="alloc_8h.html#a5">_stp_free</a> (void *ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Frees memory allocated by _stp_alloc or _stp_calloc. <a href="#a5"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="alloc_8h.html#a6">_stp_vfree</a> (void *ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Frees memory allocated by _stp_valloc. <a href="#a6"></a><br></td></tr>
</table>
<hr><h2>Enumeration Type Documentation</h2>
<a class="anchor" name="a7" doxytag="alloc.h::errorcode"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">enum <a class="el" href="alloc_8h.html#a7">errorcode</a> </td>
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</td>
</tr>
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<td>
</td>
<td>
<p>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" name="a7a0" doxytag="ERR_NONE"></a>ERR_NONE</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" name="a7a1" doxytag="ERR_NO_MEM"></a>ERR_NO_MEM</em> </td><td>
</td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00001">1</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>. </td>
</tr>
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<hr><h2>Function Documentation</h2>
<a class="anchor" name="a2" doxytag="alloc.h::_stp_alloc"></a><p>
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<td class="md" nowrap valign="top">void* _stp_alloc </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname1" valign="top" nowrap> <em>len</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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</td>
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<td>
</td>
<td>
<p>
Allocates memory within a probe.
<p>
This is used for small allocations from within a running probe where the process cannot sleep. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>Number of bytes to allocate. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a valid pointer on success or NULL on failure. </dd></dl>
<dl compact><dt><b><a class="el" href="bug.html#_bug000001">Bug:</a></b></dt><dd>Currently uses kmalloc (GFP_ATOMIC). </dd></dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00012">12</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>.
<p>
Referenced by <a class="el" href="alloc_8h-source.html#l00028">_stp_calloc()</a>, and <a class="el" href="map_8c-source.html#l00548">_stp_map_set_str()</a>. </td>
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<a class="anchor" name="a3" doxytag="alloc.h::_stp_calloc"></a><p>
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<td class="md" nowrap valign="top">void* _stp_calloc </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname1" valign="top" nowrap> <em>len</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
Allocates and clears memory within a probe.
<p>
This is used for small allocations from within a running probe where the process cannot sleep. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>Number of bytes to allocate. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a valid pointer on success or NULL on failure. </dd></dl>
<dl compact><dt><b><a class="el" href="bug.html#_bug000002">Bug:</a></b></dt><dd>Currently uses kmalloc (GFP_ATOMIC). </dd></dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00028">28</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>.
<p>
References <a class="el" href="alloc_8h-source.html#l00012">_stp_alloc()</a>.
<p>
Referenced by <a class="el" href="map_8c-source.html#l00471">_stp_map_set_int64()</a>, <a class="el" href="map_8c-source.html#l00633">_stp_map_set_stat()</a>, and <a class="el" href="map_8c-source.html#l00548">_stp_map_set_str()</a>. </td>
</tr>
</table>
<a class="anchor" name="a5" doxytag="alloc.h::_stp_free"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">void _stp_free </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname1" valign="top" nowrap> <em>ptr</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
</tr>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
Frees memory allocated by _stp_alloc or _stp_calloc.
<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>ptr</em> </td><td>pointer to memory to free </td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00057">57</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>.
<p>
Referenced by <a class="el" href="map_8c-source.html#l00765">_stp_list_clear()</a>, <a class="el" href="map_8c-source.html#l00104">_stp_map_key_del()</a>, and <a class="el" href="map_8c-source.html#l00548">_stp_map_set_str()</a>. </td>
</tr>
</table>
<a class="anchor" name="a4" doxytag="alloc.h::_stp_valloc"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">void* _stp_valloc </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname1" valign="top" nowrap> <em>len</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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</td>
</tr>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
Allocates and clears memory outside a probe.
<p>
This is typically used in the module initialization to allocate new maps, lists, etc. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>len</em> </td><td>Number of bytes to allocate. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a valid pointer on success or NULL on failure. </dd></dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00043">43</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>.
<p>
Referenced by <a class="el" href="map_8c-source.html#l00043">_stp_map_new()</a>. </td>
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<a class="anchor" name="a6" doxytag="alloc.h::_stp_vfree"></a><p>
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<td class="md" nowrap valign="top">void _stp_vfree </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname1" valign="top" nowrap> <em>ptr</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
Frees memory allocated by _stp_valloc.
<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>ptr</em> </td><td>pointer to memory to free </td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="alloc_8h-source.html#l00067">67</a> of file <a class="el" href="alloc_8h-source.html">alloc.h</a>.
<p>
Referenced by <a class="el" href="map_8c-source.html#l00190">_stp_map_del()</a>. </td>
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
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