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<div class="title">kmalloc.c File Reference</div> </div>
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<div class="textblock"><code>#include &quot;cpu/arch_consts.h&quot;</code><br />
<code>#include &lt;math.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
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Macros</h2></td></tr>
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#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a0590e61e5f511e2903e80dd97863b978">KMALLOC_BMAP_SZ</a>&#160;&#160;&#160;(((KMALLOC_SZ*1024)/4)/8)</td></tr>
<tr class="memdesc:a0590e61e5f511e2903e80dd97863b978"><td class="mdescLeft">&#160;</td><td class="mdescRight">The size of the kmalloc bitmap. <br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:a47146a9a25f3dded401dfa59fb831d40"><td class="memItemLeft" align="right" valign="top">static char&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a47146a9a25f3dded401dfa59fb831d40">get_bmap_bit</a> (size_t index)</td></tr>
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<tr class="memitem:a9374790c8f20fb22e7b04472e67df7b5"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a9374790c8f20fb22e7b04472e67df7b5">set_bmap_bit</a> (size_t index)</td></tr>
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<tr class="memitem:a5ecbd230a1da28644f56c5af47904855"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a5ecbd230a1da28644f56c5af47904855">clear_bmap_bit</a> (size_t index)</td></tr>
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<tr class="memitem:a5f52d7c56b7d67dc2f96b2e93dfdc7be"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a5f52d7c56b7d67dc2f96b2e93dfdc7be">kmalloc</a> (size_t size)</td></tr>
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<tr class="memitem:ae99fbcc0b427b9bf726c73960c29efcb"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#ae99fbcc0b427b9bf726c73960c29efcb">kfree</a> (void *mem)</td></tr>
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Variables</h2></td></tr>
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static char&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#adcc3b3dc46d5e343ae6cc0bcb475ba19">bitmap</a> [<a class="el" href="kmalloc_8c.html#a0590e61e5f511e2903e80dd97863b978">KMALLOC_BMAP_SZ</a>]</td></tr>
<tr class="memdesc:adcc3b3dc46d5e343ae6cc0bcb475ba19"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitmap of used areas of the heap. <br /></td></tr>
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static void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="kmalloc_8c.html#a735984d41155bc1032e09bece8f8d66d">data</a> =(void*)KMALLOC_START</td></tr>
<tr class="memdesc:a735984d41155bc1032e09bece8f8d66d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start of the kmalloc heap. <br /></td></tr>
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<h2 class="groupheader">Function Documentation</h2>
<a id="a5ecbd230a1da28644f56c5af47904855"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5ecbd230a1da28644f56c5af47904855">&#9670;&nbsp;</a></span>clear_bmap_bit()</h2>
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<td class="memname">static void clear_bmap_bit </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>index</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>Clear a bit in the heap bitmap </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">index</td><td>The bit to clear </td></tr>
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<a id="a47146a9a25f3dded401dfa59fb831d40"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a47146a9a25f3dded401dfa59fb831d40">&#9670;&nbsp;</a></span>get_bmap_bit()</h2>
<div class="memitem">
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<td class="memname">static char get_bmap_bit </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>index</em></td><td>)</td>
<td></td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>Get a bit in the heap bitmap </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">index</td><td>The bit to get </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the bit </dd></dl>
</div>
</div>
<a id="ae99fbcc0b427b9bf726c73960c29efcb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae99fbcc0b427b9bf726c73960c29efcb">&#9670;&nbsp;</a></span>kfree()</h2>
<div class="memitem">
<div class="memproto">
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<td class="memname">void kfree </td>
<td>(</td>
<td class="paramtype">void *&#160;</td>
<td class="paramname"><em>mem</em></td><td>)</td>
<td></td>
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<p>Free a block in the kernel heap </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">mem</td><td>The address of the block </td></tr>
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</dd>
</dl>
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<a id="a5f52d7c56b7d67dc2f96b2e93dfdc7be"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5f52d7c56b7d67dc2f96b2e93dfdc7be">&#9670;&nbsp;</a></span>kmalloc()</h2>
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<div class="memproto">
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<td class="memname">void* kmalloc </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>size</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Allocate a block in the kernel heap </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">size</td><td>The size of the block </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the address of the block in the heap. </dd></dl>
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<a id="a9374790c8f20fb22e7b04472e67df7b5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9374790c8f20fb22e7b04472e67df7b5">&#9670;&nbsp;</a></span>set_bmap_bit()</h2>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">static void set_bmap_bit </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>index</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
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<p>Set a bit in the heap bitmap </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">index</td><td>The bit to set </td></tr>
</table>
</dd>
</dl>
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