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<hr><h1>system_info.cpp</h1><a href="system__info_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025 
00026 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
00027 
00028 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00029 <font class="preprocessor"></font><font class="preprocessor">#include &lt;windows.h&gt;</font>
00030 <font class="preprocessor">#include &lt;tchar.h&gt;</font>
00031 <font class="preprocessor">#else</font>
00032 <font class="preprocessor"></font><font class="preprocessor">#include &lt;sys/types.h&gt;</font>
00033 <font class="preprocessor">#include &lt;sys/stat.h&gt;</font>
00034 <font class="preprocessor">#include &lt;fcntl.h&gt;</font>
00035 <font class="preprocessor">#include &lt;<a class="code" href="unistd_8h.html">unistd.h</a>&gt;</font>
00036 <font class="preprocessor">#endif</font>
00037 <font class="preprocessor"></font>
00038 <font class="preprocessor">#include "<a class="code" href="system__info_8h.html">nel/misc/system_info.h</a>"</font>
00039 <font class="preprocessor">#include "<a class="code" href="command_8h.html">nel/misc/command.h</a>"</font>
00040 <font class="preprocessor">#include "<a class="code" href="include_2nel_2misc_2heap__allocator_8h.html">nel/misc/heap_allocator.h</a>"</font>
00041 
00042 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00043 
00044 <font class="keyword">namespace </font>NLMISC {
00045 
<a name="l00046"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d0">00046</a> string CSystemInfo::getOS ()
00047 {
00048         string OSString = <font class="stringliteral">"Unknown"</font>;
00049 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00050 <font class="preprocessor"></font>        <font class="keywordtype">char</font> ver[1024];
00051 
00052         OSVERSIONINFOEX osvi;
00053         BOOL bOsVersionInfoEx;
00054 
00055         <font class="comment">// Try calling GetVersionEx using the OSVERSIONINFOEX structure,</font>
00056         <font class="comment">// which is supported on Windows 2000.</font>
00057         <font class="comment">//</font>
00058         <font class="comment">// If that fails, try using the OSVERSIONINFO structure.</font>
00059 
00060         ZeroMemory(&amp;osvi, <font class="keyword">sizeof</font>(OSVERSIONINFOEX));
00061         osvi.dwOSVersionInfoSize = <font class="keyword">sizeof</font>(OSVERSIONINFOEX);
00062 
00063         <font class="keywordflow">if</font>( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &amp;osvi)) )
00064         {
00065                 <font class="comment">// If OSVERSIONINFOEX doesn't work, try OSVERSIONINFO.</font>
00066                 osvi.dwOSVersionInfoSize = <font class="keyword">sizeof</font> (OSVERSIONINFO);
00067                 <font class="keywordflow">if</font> (! GetVersionEx ( (OSVERSIONINFO *) &amp;osvi) ) 
00068                         <font class="keywordflow">return</font> <font class="stringliteral">"Windows Unknown"</font>;
00069         }
00070 
00071         <font class="keywordflow">switch</font> (osvi.dwPlatformId)
00072         {
00073         <font class="keywordflow">case</font> VER_PLATFORM_WIN32_NT:
00074                 <font class="comment">// Test for the product.</font>
00075 
00076                 <font class="keywordflow">if</font> ( osvi.dwMajorVersion &lt;= 4 )
00077                         OSString = <font class="stringliteral">"Microsoft Windows NT "</font>;
00078 
00079                 <font class="keywordflow">if</font> ( osvi.dwMajorVersion == 5 )
00080                         OSString = <font class="stringliteral">"Microsoft Windows 2000 "</font>;
00081 
00082                 <font class="comment">// Test for workstation versus server.</font>
00083 <font class="comment">/* can't access to product type</font>
00084 <font class="comment">                if( bOsVersionInfoEx )</font>
00085 <font class="comment">                {</font>
00086 <font class="comment">                        if ( osvi.wProductType == VER_NT_WORKSTATION )</font>
00087 <font class="comment">                        OSString += "Professional ";</font>
00088 <font class="comment"></font>
00089 <font class="comment">                        if ( osvi.wProductType == VER_NT_SERVER )</font>
00090 <font class="comment">                        OSString += "Server ";</font>
00091 <font class="comment">                }</font>
00092 <font class="comment">                else</font>
00093 <font class="comment">*/</font>              {
00094                         HKEY hKey;
00095                         <font class="keywordtype">char</font> szProductType[80];
00096                         DWORD dwBufLen;
00097 
00098                         RegOpenKeyEx( HKEY_LOCAL_MACHINE, <font class="stringliteral">"SYSTEM\\CurrentControlSet\\Control\\ProductOptions"</font>, 0, KEY_QUERY_VALUE, &amp;hKey );
00099                         RegQueryValueEx( hKey, <font class="stringliteral">"ProductType"</font>, NULL, NULL, (LPBYTE) szProductType, &amp;dwBufLen);
00100                         RegCloseKey( hKey );
00101                         <font class="keywordflow">if</font> ( lstrcmpi( <font class="stringliteral">"WINNT"</font>, szProductType) == 0 )
00102                                 OSString += <font class="stringliteral">"Workstation "</font>;
00103                         <font class="keywordflow">if</font> ( lstrcmpi( <font class="stringliteral">"SERVERNT"</font>, szProductType) == 0 )
00104                                 OSString += <font class="stringliteral">"Server "</font>;
00105                 }
00106 
00107                 <font class="comment">// Display version, service pack (if any), and build number.</font>
00108                 <a class="code" href="namespaceNLMISC.html#a211">smprintf</a>(ver, 1024, <font class="stringliteral">"version %d.%d '%s' (Build %d)"</font>, osvi.dwMajorVersion, osvi.dwMinorVersion, osvi.szCSDVersion, osvi.dwBuildNumber &amp; 0xFFFF);
00109                 OSString += ver;
00110                 <font class="keywordflow">break</font>;
00111 
00112         <font class="keywordflow">case</font> VER_PLATFORM_WIN32_WINDOWS:
00113 
00114                 <font class="keywordflow">if</font>(osvi.dwMinorVersion == 0)
00115                         OSString = <font class="stringliteral">"Microsoft Windows 95 "</font>;
00116                 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (osvi.dwMinorVersion == 10)
00117                         OSString = <font class="stringliteral">"Microsoft Windows 98 "</font>;
00118                 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (osvi.dwMinorVersion == 90)
00119                         OSString = <font class="stringliteral">"Microsoft Windows Millenium "</font>;
00120 <font class="comment">/* microsoft way</font>
00121 <font class="comment">                if ((osvi.dwMajorVersion &gt; 4) || (osvi.dwMajorVersion == 4) &amp;&amp; (osvi.dwMinorVersion &gt; 0)))</font>
00122 <font class="comment">                        OSString += "Microsoft Windows 98 ";</font>
00123 <font class="comment">                else</font>
00124 <font class="comment">                        OSString += "Microsoft Windows 95 ";</font>
00125 <font class="comment">*/</font>
00126                 <font class="comment">// Display version, service pack (if any), and build number.</font>
00127                 <a class="code" href="namespaceNLMISC.html#a211">smprintf</a>(ver, 1024, <font class="stringliteral">"version %d.%d %s (Build %d)"</font>, osvi.dwMajorVersion, osvi.dwMinorVersion, osvi.szCSDVersion, osvi.dwBuildNumber &amp; 0xFFFF);
00128                 OSString += ver;
00129                 <font class="keywordflow">break</font>;
00130 
00131         <font class="keywordflow">case</font> VER_PLATFORM_WIN32s:
00132                 OSString = <font class="stringliteral">"Microsoft Win32s"</font>;
00133                 <font class="keywordflow">break</font>;
00134         }
00135 
00136 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00137 <font class="preprocessor"></font>
00138         OSString = <font class="stringliteral">"Unix"</font>;
00139 
00140 <font class="preprocessor">#endif  // NL_OS_UNIX</font>
00141 <font class="preprocessor"></font>
00142         <font class="keywordflow">return</font> OSString;
00143 }
00144 
<a name="l00145"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d1">00145</a> string CSystemInfo::getProc ()
00146 {
00147         string ProcString = <font class="stringliteral">"Unknown"</font>;
00148 
00149 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00150 <font class="preprocessor"></font>
00151         LONG result;
00152         <font class="keywordtype">char</font> <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>[1024];
00153         DWORD valueSize;
00154         HKEY hKey;
00155 
00156         result = ::RegOpenKeyEx (HKEY_LOCAL_MACHINE, <font class="stringliteral">"Hardware\\Description\\System\\CentralProcessor\\0"</font>, 0, KEY_QUERY_VALUE, &amp;hKey);
00157         <font class="keywordflow">if</font> (result == ERROR_SUCCESS)
00158         {
00159                 <font class="comment">// get processor name</font>
00160                 valueSize = 1024;
00161                 result = ::RegQueryValueEx (hKey, _T(<font class="stringliteral">"ProcessorNameString"</font>), NULL, NULL, (LPBYTE)&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, &amp;valueSize);
00162                 <font class="keywordflow">if</font> (result == ERROR_SUCCESS)
00163                         ProcString = <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>;
00164                 <font class="keywordflow">else</font>
00165                         ProcString = <font class="stringliteral">"UnknownProc"</font>;
00166 
00167                 ProcString += <font class="stringliteral">" / "</font>;
00168 
00169                 <font class="comment">// get processor identifier</font>
00170                 valueSize = 1024;
00171                 result = ::RegQueryValueEx (hKey, _T(<font class="stringliteral">"Identifier"</font>), NULL, NULL, (LPBYTE)&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, &amp;valueSize);
00172                 <font class="keywordflow">if</font> (result == ERROR_SUCCESS)
00173                         ProcString += <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>;
00174                 <font class="keywordflow">else</font>
00175                         ProcString += <font class="stringliteral">"UnknownIdentifier"</font>;
00176 
00177                 ProcString += <font class="stringliteral">" / "</font>;
00178 
00179                 <font class="comment">// get processor vendor</font>
00180                 valueSize = 1024;
00181                 result = ::RegQueryValueEx (hKey, _T(<font class="stringliteral">"VendorIdentifier"</font>), NULL, NULL, (LPBYTE)&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, &amp;valueSize);
00182                 <font class="keywordflow">if</font> (result == ERROR_SUCCESS)
00183                         ProcString += <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>;
00184                 <font class="keywordflow">else</font>
00185                         ProcString += <font class="stringliteral">"UnknownVendor"</font>;
00186 
00187                 ProcString += <font class="stringliteral">" / "</font>;
00188                 
00189                 <font class="comment">// get processor frequence</font>
00190                 result = ::RegQueryValueEx (hKey, _T(<font class="stringliteral">"~MHz"</font>), NULL, NULL, (LPBYTE)&amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, &amp;valueSize);
00191                 <font class="keywordflow">if</font> (result == ERROR_SUCCESS)
00192                 {
00193                         ProcString += itoa (*(<font class="keywordtype">int</font> *)<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>, 10);
00194                         ProcString += <font class="stringliteral">"MHz"</font>;
00195                 }
00196                 <font class="keywordflow">else</font>
00197                         ProcString += <font class="stringliteral">"UnknownFreq"</font>;
00198         }
00199 
00200         <font class="comment">// Make sure to close the reg key</font>
00201 
00202         RegCloseKey (hKey);
00203 
00204 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00205 <font class="preprocessor"></font>
00206 
00207 <font class="preprocessor">#endif</font>
00208 <font class="preprocessor"></font>
00209         <font class="keywordflow">return</font> ProcString;
00210 }
00211 
<a name="l00212"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d2">00212</a> string CSystemInfo::getMem ()
00213 {
00214         string MemString = <font class="stringliteral">"Unknown"</font>;
00215 
00216 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00217 <font class="preprocessor"></font>
00218         MEMORYSTATUS ms;
00219 
00220         GlobalMemoryStatus (&amp;ms);
00221 
00222         sint extt = 0, extf = 0;
00223         <font class="keywordtype">char</font> *ext2str[] = { <font class="stringliteral">"b"</font>, <font class="stringliteral">"Kb"</font>, <font class="stringliteral">"Mb"</font>, <font class="stringliteral">"Gb"</font>, <font class="stringliteral">"Tb"</font> };
00224 
00225         <font class="keywordflow">while</font> (ms.dwTotalPhys &gt; 1024)
00226         {
00227                 ms.dwTotalPhys /= 1024;
00228                 extt++;
00229         }
00230         
00231         <font class="keywordflow">while</font> (ms.dwAvailPhys &gt; 1024)
00232         {
00233                 ms.dwAvailPhys /= 1024;
00234                 extf++;
00235         }
00236 
00237         <font class="keywordtype">char</font> mem[1024];
00238         <a class="code" href="namespaceNLMISC.html#a211">smprintf</a> (mem, 1024, <font class="stringliteral">"physical memory: total: %d %s free: %d %s"</font>, ms.dwTotalPhys+1, ext2str[extt], ms.dwAvailPhys+1, ext2str[extf]);
00239         MemString = mem;
00240 
00241 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00242 <font class="preprocessor"></font>
00243 
00244 <font class="preprocessor">#endif</font>
00245 <font class="preprocessor"></font>
00246         <font class="keywordflow">return</font> MemString;
00247 }
00248 
00249 
00250 <font class="keyword">static</font> <font class="keywordtype">bool</font> <a class="code" href="namespaceNLMISC.html#a291">DetectMMX</a>()
00251 {               
00252 <font class="preprocessor">        #ifdef NL_OS_WINDOWS            </font>
00253 <font class="preprocessor"></font>                <font class="keywordflow">if</font> (!CSystemInfo::hasCPUID()) <font class="keywordflow">return</font> <font class="keyword">false</font>; <font class="comment">// cpuid not supported ...</font>
00254 
00255                 uint32 result = 0;
00256                 __asm
00257                 {
00258                          mov  eax,1
00259                          cpuid
00260                          test edx,0x800000  <font class="comment">// bit 23 = MMX instruction set</font>
00261                          je   noMMX
00262                          mov result, 1  
00263                         noMMX:
00264                 }
00265 
00266                 <font class="keywordflow">return</font> result == 1;
00267  
00268                 <font class="comment">// printf("mmx detected\n");</font>
00269 
00270 <font class="preprocessor">        #else</font>
00271 <font class="preprocessor"></font>                <font class="keywordflow">return</font> <font class="keyword">false</font>;
00272 <font class="preprocessor">        #endif</font>
00273 <font class="preprocessor"></font>}
00274 
00275 
00276 <font class="keyword">static</font> <font class="keywordtype">bool</font> <a class="code" href="namespaceNLMISC.html#a292">DetectSSE</a>()
00277 {       
00278 <font class="preprocessor">        #ifdef NL_OS_WINDOWS</font>
00279 <font class="preprocessor"></font>                <font class="keywordflow">if</font> (!CSystemInfo::hasCPUID()) <font class="keywordflow">return</font> <font class="keyword">false</font>; <font class="comment">// cpuid not supported ...</font>
00280 
00281                 uint32 result = 0;
00282                 __asm
00283                 {                       
00284                         mov eax, 1   <font class="comment">// request for feature flags</font>
00285                         cpuid                                                   
00286                         test EDX, 002000000h   <font class="comment">// bit 25 in feature flags equal to 1</font>
00287                         je noSSE
00288                         mov result, 1  <font class="comment">// sse detected</font>
00289                 noSSE:
00290                 }
00291 
00292 
00293                 <font class="keywordflow">if</font> (result)
00294                 {
00295                         <font class="comment">// check OS support for SSE</font>
00296                         <font class="keywordflow">try</font> 
00297                         {
00298                                 __asm
00299                                 {
00300                                         xorps xmm0, xmm0  <font class="comment">// Streaming SIMD Extension</font>
00301                                 }
00302                         }
00303                         <font class="keywordflow">catch</font>(...)
00304                         {
00305                                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00306                         }
00307                 
00308                         <font class="comment">// printf("sse detected\n");</font>
00309 
00310                         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00311                 }
00312                 <font class="keywordflow">else</font>
00313                 {
00314                         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00315                 }
00316 <font class="preprocessor">        #else</font>
00317 <font class="preprocessor"></font>                <font class="keywordflow">return</font> <font class="keyword">false</font>;
00318 <font class="preprocessor">        #endif</font>
00319 <font class="preprocessor"></font>}
00320 
00321 <font class="keyword">static</font> <font class="keywordtype">bool</font> <a class="code" href="namespaceNLMISC.html#a203">HaveMMX</a> = <a class="code" href="namespaceNLMISC.html#a291">DetectMMX</a> ();
00322 <font class="keyword">static</font> <font class="keywordtype">bool</font> <a class="code" href="namespaceNLMISC.html#a204">HaveSSE</a> = <a class="code" href="namespaceNLMISC.html#a292">DetectSSE</a> ();
00323 
<a name="l00324"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d3">00324</a> <font class="keywordtype">bool</font> CSystemInfo::hasCPUID ()
00325 {
00326 <font class="preprocessor">        #ifdef NL_OS_WINDOWS</font>
00327 <font class="preprocessor"></font>                 uint32 result;
00328                  __asm
00329                  {
00330                          pushad
00331                          pushfd
00332                          <font class="comment">//      If ID bit of EFLAGS can change, then cpuid is available</font>
00333                          pushfd
00334                          pop  eax                                       <font class="comment">// Get EFLAG</font>
00335                          mov  ecx,eax
00336                          xor  eax,0x200000                      <font class="comment">// Flip ID bit</font>
00337                          push eax
00338                          popfd                                          <font class="comment">// Write EFLAGS</font>
00339                          pushfd      
00340                          pop  eax                                       <font class="comment">// read back EFLAG</font>
00341                          xor  eax,ecx
00342                          je   noCpuid                           <font class="comment">// no flip -&gt; no CPUID instr.</font>
00343                          
00344                          popfd                                          <font class="comment">// restore state</font>
00345                          popad
00346                          mov  result, 1
00347                          jmp  CPUIDPresent
00348                 
00349                         noCpuid:
00350                          popfd                                      <font class="comment">// restore state</font>
00351                          popad
00352                          mov result, 0
00353                         CPUIDPresent:
00354                  }
00355                  <font class="keywordflow">return</font> result == 1;
00356 <font class="preprocessor">        #else</font>
00357 <font class="preprocessor"></font>                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00358 <font class="preprocessor">        #endif</font>
00359 <font class="preprocessor"></font>}
<a name="l00360"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d4">00360</a> <font class="keywordtype">bool</font> CSystemInfo::hasMMX () { <font class="keywordflow">return</font> <a class="code" href="namespaceNLMISC.html#a203">HaveMMX</a>; }
<a name="l00361"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d5">00361</a> <font class="keywordtype">bool</font> CSystemInfo::hasSSE () { <font class="keywordflow">return</font> <a class="code" href="namespaceNLMISC.html#a204">HaveSSE</a>; }
00362 
00363 
<a name="l00364"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d6">00364</a> <font class="keywordtype">bool</font> CSystemInfo::isNT()
00365 {
00366 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00367 <font class="preprocessor"></font>        OSVERSIONINFO ver;
00368         ver.dwOSVersionInfoSize = <font class="keyword">sizeof</font>(OSVERSIONINFO);
00369         GetVersionEx(&amp;ver);
00370         <font class="keywordflow">return</font> ver.dwPlatformId == VER_PLATFORM_WIN32_NT;
00371 <font class="preprocessor">#else</font>
00372 <font class="preprocessor"></font>        <font class="keywordflow">return</font> <font class="keyword">false</font>;
00373 <font class="preprocessor">#endif</font>
00374 <font class="preprocessor"></font>}
00375 
00376 
00377 <font class="preprocessor">#ifdef NL_OS_UNIX</font>
00378 <font class="preprocessor"></font>
00379 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">char</font> *<a class="code" href="namespaceNLMISC.html#a298">skipWS</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *p)
00380 {
00381     <font class="keywordflow">while</font> (isspace(*p)) p++;
00382     <font class="keywordflow">return</font> (<font class="keywordtype">char</font> *)p;
00383 }
00384 
00385 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">char</font> *<a class="code" href="namespaceNLMISC.html#a299">skipToken</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *p)
00386 {
00387     <font class="keywordflow">while</font> (isspace(*p)) p++;
00388     <font class="keywordflow">while</font> (*p &amp;&amp; !isspace(*p)) p++;
00389     <font class="keywordflow">return</font> (<font class="keywordtype">char</font> *)p;
00390 }
00391 
00392 <font class="comment">// col: 0=total used free shared buffers cached</font>
00393 uint32 getSystemMemory (uint col)
00394 {
00395         <font class="keywordflow">if</font> (col &gt; 5)
00396                 <font class="keywordflow">return</font> 0;
00397 
00398     <font class="keywordtype">char</font> buffer[4096+1];
00399     <font class="keywordtype">int</font> fd, len;
00400     <font class="keywordtype">char</font> *p;
00401         
00402     <font class="comment">/* get system wide memory usage */</font>
00403     {
00404                 <font class="keywordtype">char</font> *p;
00405                 
00406                 fd = open(<font class="stringliteral">"/proc/meminfo"</font>, O_RDONLY);
00407                 len = read(fd, buffer, <font class="keyword">sizeof</font>(buffer)-1);
00408                 close(fd);
00409                 buffer[len] = <font class="charliteral">'\0'</font>;
00410                 
00411                 <font class="comment">/* be prepared for extra columns to appear be seeking</font>
00412 <font class="comment">                to ends of lines */</font>
00413                 p = strchr(buffer, <font class="charliteral">'\n'</font>);
00414                 p = <a class="code" href="namespaceNLMISC.html#a299">skipToken</a>(p);                       <font class="comment">/* "Mem:" */</font>
00415                 <font class="keywordflow">for</font> (uint i = 0; i &lt; col; i++)
00416                 {
00417                         p = <a class="code" href="namespaceNLMISC.html#a299">skipToken</a>(p);
00418                 }
00419                 <font class="keywordflow">return</font> strtoul(p, &amp;p, 10);
00420         }
00421 }
00422 
00423 <font class="preprocessor">#endif // NL_OS_UNIX</font>
00424 <font class="preprocessor"></font>
00425 
00426 
00427 
<a name="l00428"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d7">00428</a> uint32 CSystemInfo::availablePhysicalMemory ()
00429 {
00430 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00431 <font class="preprocessor"></font>
00432         MEMORYSTATUS ms;
00433         GlobalMemoryStatus (&amp;ms);
00434         <font class="keywordflow">return</font> ms.dwAvailPhys;
00435 
00436 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00437 <font class="preprocessor"></font>
00438         <font class="keywordflow">return</font> getSystemMemory (2);
00439 
00440 <font class="preprocessor">#endif</font>
00441 <font class="preprocessor"></font>
00442         <font class="keywordflow">return</font> 0;
00443 }
00444 
<a name="l00445"></a><a class="code" href="classNLMISC_1_1CSystemInfo.html#d8">00445</a> uint32 CSystemInfo::totalPhysicalMemory ()
00446 {
00447 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00448 <font class="preprocessor"></font>
00449         MEMORYSTATUS ms;
00450         GlobalMemoryStatus (&amp;ms);
00451         <font class="keywordflow">return</font> ms.dwTotalPhys;
00452 
00453 <font class="preprocessor">#elif defined NL_OS_UNIX</font>
00454 <font class="preprocessor"></font>
00455         <font class="keywordflow">return</font> getSystemMemory (0);
00456         
00457 <font class="preprocessor">#endif</font>
00458 <font class="preprocessor"></font>
00459         <font class="keywordflow">return</font> 0;
00460 }
00461 
00462 
00463 <a class="code" href="namespaceNLMISC.html#a314">NLMISC_DYNVARIABLE</a>(uint32, AvailablePhysicalMemory, <font class="stringliteral">"Physical memory available on this computer in bytes"</font>)
00464 {
00465         <font class="keywordflow">if</font> (get) *<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> = CSystemInfo::availablePhysicalMemory ();
00466 }
00467 
00468 <a class="code" href="namespaceNLMISC.html#a314">NLMISC_DYNVARIABLE</a>(uint32, TotalPhysicalMemory, <font class="stringliteral">"Total physical memory on this computer in bytes"</font>)
00469 {
00470         <font class="keywordflow">if</font> (get) *<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> = CSystemInfo::totalPhysicalMemory ();
00471 }
00472 
00473 <a class="code" href="namespaceNLMISC.html#a314">NLMISC_DYNVARIABLE</a>(uint32, ProcessUsedMemory, <font class="stringliteral">"Memory used by this process in bytes"</font>)
00474 {
00475         <font class="keywordflow">if</font> (get) *<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> = CHeapAllocator::getAllocatedSystemMemory ();
00476 }
00477 
00478 
00479 } <font class="comment">// NLMISC</font>
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