diff options
| author | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
|---|---|---|
| committer | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
| commit | 0ea5fc66924303d1bf73ba283a383e2aadee02f2 (patch) | |
| tree | 2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/a02515.html | |
| download | nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.tar.xz nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.zip | |
Initial commit
Diffstat (limited to 'docs/doxygen/nel/a02515.html')
| -rw-r--r-- | docs/doxygen/nel/a02515.html | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/docs/doxygen/nel/a02515.html b/docs/doxygen/nel/a02515.html new file mode 100644 index 00000000..aef8a969 --- /dev/null +++ b/docs/doxygen/nel/a02515.html @@ -0,0 +1,264 @@ +<!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>NeL: NLMISC::CFastMem class Reference</title> +<link href="doxygen.css" rel="stylesheet" type="text/css"> +</head><body> +<!-- Generated by Doxygen 1.3.6 --> +<div class="qindex"> <form class="search" action="search.php" method="get"> +<a class="qindex" href="main.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">Data Structures</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">Data Fields</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related Pages</a> | <span class="search"><u>S</u>earch for <input class="search" type="text" name="query" value="" size="20" accesskey="s"/></span></form></div> +<h1>NLMISC::CFastMem Class Reference</h1><code>#include <<a class="el" href="a05703.html">fast_mem.h</a>></code> +<p> +<hr><a name="_details"></a><h2>Detailed Description</h2> +Functions for Fast Memory manipulation with Pentium-class processors. 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></dt><dd>Lionel Berenguier <p> +Nevrax France </dd></dl> +<dl compact><dt><b>Date:</b></dt><dd>2002 </dd></dl> + +<p> + +<p> +Definition at line <a class="el" href="a05703.html#l00044">44</a> of file <a class="el" href="a05703.html">fast_mem.h</a>.<table border=0 cellpadding=0 cellspacing=0> +<tr><td></td></tr> +<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr> +<tr><td class="memItemLeft" nowrap align=right valign=top>void * </td><td class="memItemRight" valign=bottom><a class="el" href="a02515.html#NLMISC_1_1CFastMeme0">memcpySSE</a> (void *dst, const void *<a class="el" href="a04223.html#a652">src</a>, size_t nbytes)</td></tr> + +<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02515.html#NLMISC_1_1CFastMeme1">precache</a> (const void *<a class="el" href="a04223.html#a652">src</a>, <a class="el" href="a04558.html#a15">uint</a> nbytes)</td></tr> + +<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02515.html#NLMISC_1_1CFastMeme2">precacheMMX</a> (const void *<a class="el" href="a04223.html#a652">src</a>, <a class="el" href="a04558.html#a15">uint</a> nbytes)</td></tr> + +<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02515.html#NLMISC_1_1CFastMeme3">precacheSSE</a> (const void *<a class="el" href="a04223.html#a652">src</a>, <a class="el" href="a04558.html#a15">uint</a> nbytes)</td></tr> + +<tr><td colspan=2><br><h2>Static Public Attributes</h2></td></tr> +<tr><td class="memItemLeft" nowrap align=right valign=top>void *(* </td><td class="memItemRight" valign=bottom><a class="el" href="a02515.html#NLMISC_1_1CFastMems0">memcpy</a> )(void *dts, const void *<a class="el" href="a04223.html#a652">src</a>, size_t nbytes)</td></tr> + +</table> +<hr><h2>Member Function Documentation</h2> +<a class="anchor" name="NLMISC_1_1CFastMeme0" doxytag="NLMISC::CFastMem::memcpySSE" ></a><p> +<table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> + <tr> + <td class="mdRow"> + <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 class="md" nowrap align="right"></td> + <td></td> + <td class="md" nowrap>const void * </td> + <td class="mdname" nowrap> <em>src</em>, </td> + </tr> + <tr> + <td class="md" nowrap align="right"></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. 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="a05702.html#l00205">205</a> of file <a class="el" href="a05702.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="a05702.html#l00239">memcpy</a>, and <a class="el" href="a05646.html#l01124">src</a>. +<p> +<div class="fragment"><pre>00206 { +00207 <span class="comment">// Use std memcpy.</span> +00208 <span class="keywordflow">return</span> <a class="code" href="a02515.html#NLMISC_1_1CFastMems0">memcpy</a>(dst, src, nbytes); +00209 } +</pre></div> </td> + </tr> +</table> +<a class="anchor" name="NLMISC_1_1CFastMeme1" doxytag="NLMISC::CFastMem::precache" ></a><p> +<table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> + <tr> + <td class="mdRow"> + <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 class="md" nowrap align="right"></td> + <td></td> + <td class="md" nowrap><a class="el" href="a04558.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> +Definition at line <a class="el" href="a05702.html#l00218">218</a> of file <a class="el" href="a05702.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="a05646.html#l01124">src</a>, and <a class="el" href="a05981.html#l00105">uint</a>. +<p> +<div class="fragment"><pre>00219 { +00220 <span class="comment">// no-op.</span> +00221 } +</pre></div> </td> + </tr> +</table> +<a class="anchor" name="NLMISC_1_1CFastMeme2" doxytag="NLMISC::CFastMem::precacheMMX" ></a><p> +<table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> + <tr> + <td class="mdRow"> + <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 class="md" nowrap align="right"></td> + <td></td> + <td class="md" nowrap><a class="el" href="a04558.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). Hence prefer <a class="el" href="a02515.html#NLMISC_1_1CFastMeme3">precacheSSE()</a> when available. nbytes should not override 4K +<p> +Definition at line <a class="el" href="a05702.html#l00214">214</a> of file <a class="el" href="a05702.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="a05646.html#l01124">src</a>, and <a class="el" href="a05981.html#l00105">uint</a>. +<p> +<div class="fragment"><pre>00215 { +00216 <span class="comment">// no-op.</span> +00217 } +</pre></div> </td> + </tr> +</table> +<a class="anchor" name="NLMISC_1_1CFastMeme3" doxytag="NLMISC::CFastMem::precacheSSE" ></a><p> +<table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> + <tr> + <td class="mdRow"> + <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 class="md" nowrap align="right"></td> + <td></td> + <td class="md" nowrap><a class="el" href="a04558.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). nbytes should not override 4K +<p> +Definition at line <a class="el" href="a05702.html#l00210">210</a> of file <a class="el" href="a05702.html">fast_mem.cpp</a>. +<p> +References <a class="el" href="a05646.html#l01124">src</a>, and <a class="el" href="a05981.html#l00105">uint</a>. +<p> +<div class="fragment"><pre>00211 { +00212 <span class="comment">// no-op.</span> +00213 } +</pre></div> </td> + </tr> +</table> +<hr><h2>Field Documentation</h2> +<a class="anchor" name="NLMISC_1_1CFastMems0" doxytag="NLMISC::CFastMem::memcpy" ></a><p> +<table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> + <tr> + <td class="mdRow"> + <table cellpadding="0" cellspacing="0" border="0"> + <tr> + <td class="md" nowrap valign="top"> void *(* <a class="el" href="a02515.html#NLMISC_1_1CFastMems0">NLMISC::CFastMem::memcpy</a>)(void *dts, const void *<a class="el" href="a04223.html#a652">src</a>, size_t nbytes)=findBestmemcpy()<code> [static]</code> + </table> + </td> + </tr> +</table> +<table cellspacing=5 cellpadding=0 border=0> + <tr> + <td> + + </td> + <td> + +<p> +This is a function pointer that points on the best memcpy function available depending of the OS and proc. In the best case, it will use <a class="el" href="a02515.html#NLMISC_1_1CFastMeme0">memcpySSE()</a>, and in worst case, it'll use the libc <a class="el" href="a02515.html#NLMISC_1_1CFastMems0">memcpy()</a> Simply use it this way: CFastMem::memcpy(dst, src, size); +<p> +Definition at line <a class="el" href="a05702.html#l00239">239</a> of file <a class="el" href="a05702.html">fast_mem.cpp</a>. +<p> +Referenced by <a class="el" href="a05612.html#l00125">NLSOUND::CContextSoundContainer< NbJoker, UseRandom, Shift >::init()</a>, and <a class="el" href="a05702.html#l00205">memcpySSE()</a>. </td> + </tr> +</table> +<hr>The documentation for this class was generated from the following files:<ul> +<li><a class="el" href="a05703.html">fast_mem.h</a><li><a class="el" href="a05702.html">fast_mem.cpp</a></ul> +<hr size="1"><address style="align: right;"><small>Generated on Tue Mar 16 13:12:28 2004 for NeL by +<a href="http://www.doxygen.org/index.html"> +<img src="doxygen.png" alt="doxygen" align="middle" border=0 > +</a>1.3.6 </small></address> +</body> +</html> |