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HEIGHT="1" BORDER=0 ALT=""> +</td></tr></table> + + +<!-- block --> +<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="http://www.nevrax.org/inc/img/reddots.gif"></TD> + <TD><B>Documentation</B></TD> + <TD ALIGN=RIGHT> </td> +</tr></table> +<!-- Generated by Doxygen 1.2.14 --> +<center> +<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>NLMISC::CFastMem Class Reference</h1>Functions for Fast Memory manipulation with Pentium-class processors. +<a href="#_details">More...</a> +<p> +<code>#include <<a class="el" href="fast__mem_8h-source.html">fast_mem.h</a>></code> +<p> +<a href="classNLMISC_1_1CFastMem-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0> +<tr><td colspan=2><br><h2>Static Public Methods</h2></td></tr> +<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classNLMISC_1_1CFastMem.html#d0">precache</a> (const void *<a class="el" href="driver__opengl__extension__def_8h.html#a409">src</a>, <a class="el" href="memory__common_8h.html#a15">uint</a> nbytes)</td></tr> +<tr><td> </td><td><font size=-1><em>Fast precaching of memory in L1 cache using SSE or MMX where available (NB: others methods don't do the test) nbytes should not override 4K.</em> <a href="#d0">More...</a><em></em></font><br><br></td></tr> +<tr><td nowrap align=right valign=top>void * </td><td valign=bottom><a class="el" href="classNLMISC_1_1CFastMem.html#d1">memcpySSE</a> (void *dst, const void *<a class="el" href="driver__opengl__extension__def_8h.html#a409">src</a>, size_t nbytes)</td></tr> +<tr><td> </td><td><font size=-1><em>Fast memcpy using SSE instructions: prefetchnta and movntq.</em> <a href="#d1">More...</a><em></em></font><br><br></td></tr> +<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classNLMISC_1_1CFastMem.html#d2">precacheSSE</a> (const void *<a class="el" href="driver__opengl__extension__def_8h.html#a409">src</a>, <a class="el" href="memory__common_8h.html#a15">uint</a> nbytes)</td></tr> +<tr><td> </td><td><font size=-1><em>Fast precaching of memory in L1 cache using MMX/SSE instructions: movq and prefetchnta Result is typically 880 Mo/s (surely slower because of overhead).</em> <a href="#d2">More...</a><em></em></font><br><br></td></tr> +<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classNLMISC_1_1CFastMem.html#d3">precacheMMX</a> (const void *<a class="el" href="driver__opengl__extension__def_8h.html#a409">src</a>, <a class="el" href="memory__common_8h.html#a15">uint</a> nbytes)</td></tr> +<tr><td> </td><td><font size=-1><em>Fast precaching of memory in L1 cache using MMX instructions only: movq Result is typically 720 Mo/s (surely slower because of overhead).</em> <a href="#d3">More...</a><em></em></font><br><br></td></tr> +</table> +<hr><a name="_details"></a><h2>Detailed Description</h2> +Functions for Fast Memory manipulation with Pentium-class processors. +<p> +From <a href="http://www.sgi.com/developers/technology/irix/resources/asc_cpu.html">http://www.sgi.com/developers/technology/irix/resources/asc_cpu.html</a> <dl compact><dt><b> +Author: </b><dd> +Lionel Berenguier , Nevrax France </dl><dl compact><dt><b> +Date: </b><dd> +2002 </dl> +<p> + +<p> +Definition at line <a class="el" href="fast__mem_8h-source.html#l00044">44</a> of file <a class="el" href="fast__mem_8h-source.html">fast_mem.h</a>.<hr><h2>Member Function Documentation</h2> +<a name="d1" doxytag="NLMISC::CFastMem::memcpySSE"></a><p> +<table width="100%" cellpadding="2" cellspacing="0" border="0"> + <tr> + <td class="md"> + <table cellpadding="0" cellspacing="0" border="0"> + <tr> + <td class="md" nowrap valign="top"> void * NLMISC::CFastMem::memcpySSE </td> + <td class="md" valign="top">( </td> + <td class="md" nowrap valign="top">void * </td> + <td class="mdname" nowrap> <em>dst</em>, </td> + </tr> + <tr> + <td></td> + <td></td> + <td class="md" nowrap>const void * </td> + <td class="mdname" nowrap> <em>src</em>, </td> + </tr> + <tr> + <td></td> + <td></td> + <td class="md" nowrap>size_t </td> + <td class="mdname" nowrap> <em>nbytes</em></td> + </tr> + <tr> + <td></td> + <td class="md">) </td> + <td class="md" colspan="2"><code> [static]</code></td> + </tr> + + </table> + </td> + </tr> +</table> +<table cellspacing=5 cellpadding=0 border=0> + <tr> + <td> + + </td> + <td> + +<p> +Fast memcpy using SSE instructions: prefetchnta and movntq. +<p> +Can be called only if SSE and MMX is supported NB: Copy per block of 4K through L1 cache Result is typically 420 Mo/s instead of 150 Mo/s. +<p> +Definition at line <a class="el" href="fast__mem_8cpp-source.html#l00205">205</a> of file <a class="el" href="fast__mem_8cpp-source.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="driver__opengl__extension__def_8h-source.html#l00820">src</a>. </td> + </tr> +</table> +<a name="d0" doxytag="NLMISC::CFastMem::precache"></a><p> +<table width="100%" cellpadding="2" cellspacing="0" border="0"> + <tr> + <td class="md"> + <table cellpadding="0" cellspacing="0" border="0"> + <tr> + <td class="md" nowrap valign="top"> void NLMISC::CFastMem::precache </td> + <td class="md" valign="top">( </td> + <td class="md" nowrap valign="top">const void * </td> + <td class="mdname" nowrap> <em>src</em>, </td> + </tr> + <tr> + <td></td> + <td></td> + <td class="md" nowrap><a class="el" href="memory__common_8h.html#a15">uint</a> </td> + <td class="mdname" nowrap> <em>nbytes</em></td> + </tr> + <tr> + <td></td> + <td class="md">) </td> + <td class="md" colspan="2"><code> [static]</code></td> + </tr> + + </table> + </td> + </tr> +</table> +<table cellspacing=5 cellpadding=0 border=0> + <tr> + <td> + + </td> + <td> + +<p> +Fast precaching of memory in L1 cache using SSE or MMX where available (NB: others methods don't do the test) nbytes should not override 4K. +<p> + +<p> +Definition at line <a class="el" href="fast__mem_8cpp-source.html#l00218">218</a> of file <a class="el" href="fast__mem_8cpp-source.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="driver__opengl__extension__def_8h-source.html#l00820">src</a>. </td> + </tr> +</table> +<a name="d3" doxytag="NLMISC::CFastMem::precacheMMX"></a><p> +<table width="100%" cellpadding="2" cellspacing="0" border="0"> + <tr> + <td class="md"> + <table cellpadding="0" cellspacing="0" border="0"> + <tr> + <td class="md" nowrap valign="top"> void NLMISC::CFastMem::precacheMMX </td> + <td class="md" valign="top">( </td> + <td class="md" nowrap valign="top">const void * </td> + <td class="mdname" nowrap> <em>src</em>, </td> + </tr> + <tr> + <td></td> + <td></td> + <td class="md" nowrap><a class="el" href="memory__common_8h.html#a15">uint</a> </td> + <td class="mdname" nowrap> <em>nbytes</em></td> + </tr> + <tr> + <td></td> + <td class="md">) </td> + <td class="md" colspan="2"><code> [static]</code></td> + </tr> + + </table> + </td> + </tr> +</table> +<table cellspacing=5 cellpadding=0 border=0> + <tr> + <td> + + </td> + <td> + +<p> +Fast precaching of memory in L1 cache using MMX instructions only: movq Result is typically 720 Mo/s (surely slower because of overhead). +<p> +Hence prefer <a class="el" href="classNLMISC_1_1CFastMem.html#d2">precacheSSE</a>() when available. nbytes should not override 4K +<p> +Definition at line <a class="el" href="fast__mem_8cpp-source.html#l00214">214</a> of file <a class="el" href="fast__mem_8cpp-source.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="driver__opengl__extension__def_8h-source.html#l00820">src</a>. </td> + </tr> +</table> +<a name="d2" doxytag="NLMISC::CFastMem::precacheSSE"></a><p> +<table width="100%" cellpadding="2" cellspacing="0" border="0"> + <tr> + <td class="md"> + <table cellpadding="0" cellspacing="0" border="0"> + <tr> + <td class="md" nowrap valign="top"> void NLMISC::CFastMem::precacheSSE </td> + <td class="md" valign="top">( </td> + <td class="md" nowrap valign="top">const void * </td> + <td class="mdname" nowrap> <em>src</em>, </td> + </tr> + <tr> + <td></td> + <td></td> + <td class="md" nowrap><a class="el" href="memory__common_8h.html#a15">uint</a> </td> + <td class="mdname" nowrap> <em>nbytes</em></td> + </tr> + <tr> + <td></td> + <td class="md">) </td> + <td class="md" colspan="2"><code> [static]</code></td> + </tr> + + </table> + </td> + </tr> +</table> +<table cellspacing=5 cellpadding=0 border=0> + <tr> + <td> + + </td> + <td> + +<p> +Fast precaching of memory in L1 cache using MMX/SSE instructions: movq and prefetchnta Result is typically 880 Mo/s (surely slower because of overhead). +<p> +nbytes should not override 4K +<p> +Definition at line <a class="el" href="fast__mem_8cpp-source.html#l00210">210</a> of file <a class="el" href="fast__mem_8cpp-source.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="driver__opengl__extension__def_8h-source.html#l00820">src</a>. </td> + </tr> +</table> +<hr>The documentation for this class was generated from the following files:<ul> +<li><a class="el" href="fast__mem_8h-source.html">fast_mem.h</a><li><a class="el" href="fast__mem_8cpp-source.html">fast_mem.cpp</a></ul> + + +<!-- footer --> +<BR><FONT Size=+5> 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