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<hr><h1>big_file.h</h1><a href="big__file_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000, 2002 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">#ifndef NL_BIG_FILE_H</font>
00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_BIG_FILE_H</font>
00028 <font class="preprocessor"></font>
00029 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="tds_8h.html">nel/misc/tds.h</a>"</font>
00031
00032
00033 <font class="keyword">namespace </font>NLMISC {
00034
00042 <font class="keyword">const</font> uint32 <a class="code" href="namespaceNLMISC.html#a0">BF_ALWAYS_OPENED</a> = 0x00000001;
00043 <font class="keyword">const</font> uint32 <a class="code" href="namespaceNLMISC.html#a1">BF_CACHE_FILE_ON_OPEN</a> = 0x00000002;
00044
00045 <font class="comment">// ***************************************************************************</font>
<a name="l00046"></a><a class="code" href="classNLMISC_1_1CBigFile.html">00046</a> <font class="keyword">class </font>CBigFile
00047 {
00048
00049 <font class="keyword">public</font>:
00050
00051 <font class="comment">// Retrieve the global instance</font>
00052 <font class="keyword">static</font> <a class="code" href="classNLMISC_1_1CBigFile.html#c0">CBigFile</a> &<a class="code" href="classNLMISC_1_1CBigFile.html#d0">getInstance</a> ();
00053
00054 <font class="comment">// Add a big file to the manager</font>
00055 <font class="keywordtype">bool</font> <a class="code" href="classNLMISC_1_1CBigFile.html#a0">add</a> (<font class="keyword">const</font> std::string &sBigFileName, uint32 nOptions);
00056
00057 <font class="comment">// Remove a big file from the manager</font>
00058 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CBigFile.html#a1">remove</a> (<font class="keyword">const</font> std::string &sBigFileName);
00059
00060 <font class="comment">// true if a bigFile is added</font>
00061 <font class="keywordtype">bool</font> <a class="code" href="classNLMISC_1_1CBigFile.html#a2">isBigFileAdded</a>(<font class="keyword">const</font> std::string &sBigFileName);
00062
00063 <font class="comment">// List all files in a bigfile</font>
00064 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CBigFile.html#a3">list</a> (<font class="keyword">const</font> std::string &sBigFileName, std::vector<std::string> &vAllFiles);
00065
00066 <font class="comment">// Remove all big files added</font>
00067 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CBigFile.html#a4">removeAll</a> ();
00068
00069 <font class="comment">// Used by CIFile to get information about the files within the big file</font>
00070 FILE* <a class="code" href="classNLMISC_1_1CBigFile.html#a5">getFile</a> (<font class="keyword">const</font> std::string &sFileName, uint32 &rFileSize, uint32 &rBigFileOffset,
00071 <font class="keywordtype">bool</font> &rCacheFileOnOpen, <font class="keywordtype">bool</font> &rAlwaysOpened);
00072
00073 <font class="comment">// ***************</font>
00074 <font class="keyword">private</font>:
00075 <font class="keyword">class </font><a class="code" href="classNLMISC_1_1CBigFile.html#l0">CThreadFileArray</a>;
<a name="l00076"></a><a class="code" href="classNLMISC_1_1CBigFile.html#l0">00076</a> <font class="keyword">friend</font> <font class="keyword">class </font><a class="code" href="classNLMISC_1_1CBigFile.html#l0">CThreadFileArray</a>;
00077
00078 <font class="comment">// A ptr to a file.</font>
<a name="l00079"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html">00079</a> <font class="keyword">struct </font>CHandleFile
00080 {
<a name="l00081"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html#m0">00081</a> FILE *<a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html#m0">File</a>;
<a name="l00082"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html#a0">00082</a> <a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html#a0">CHandleFile</a>()
00083 {
00084 <a class="code" href="structNLMISC_1_1CBigFile_1_1CHandleFile.html#m0">File</a>= NULL;
00085 }
00086 };
00087
00088 <font class="comment">// A class which return a FILE * handle per Thread.</font>
<a name="l00089"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html">00089</a> <font class="keyword">class </font><a class="code" href="classNLMISC_1_1CBigFile.html#l0">CThreadFileArray</a>
00090 {
00091 <font class="keyword">public</font>:
00092 <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a0">CThreadFileArray</a>();
00093
00094 <font class="comment">// Allocate a FileId for a BNP.</font>
00095 uint32 <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a1">allocate</a>();
00096 <font class="comment">// Given a BNP File Id, return its FILE* handle for the current thread.</font>
00097 CHandleFile &<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a2">get</a>(uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>);
00098
00099 <font class="keyword">private</font>:
00100 <font class="comment">// Do it this way because a few limited TDS is possible (64 on NT4)</font>
<a name="l00101"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o0">00101</a> CTDS <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o0">_TDS</a>;
00102 <font class="comment">// The array is grow only!!</font>
<a name="l00103"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o1">00103</a> uint32 <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o1">_CurrentId</a>;
00104 };
00105
00106 <font class="comment">// A BNPFile header</font>
<a name="l00107"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNPFile.html">00107</a> <font class="keyword">struct </font>BNPFile
00108 {
<a name="l00109"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNPFile.html#m0">00109</a> uint32 <a class="code" href="structNLMISC_1_1CBigFile_1_1BNPFile.html#m0">Size</a>;
<a name="l00110"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNPFile.html#m1">00110</a> uint32 <a class="code" href="structNLMISC_1_1CBigFile_1_1BNPFile.html#m1">Pos</a>;
00111 };
00112
00113 <font class="comment">// A BNP structure</font>
<a name="l00114"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html">00114</a> <font class="keyword">struct </font>BNP
00115 {
00116 <font class="comment">// FileName of the BNP. important to open it in getFile() (for other threads or if not always opened).</font>
<a name="l00117"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m0">00117</a> std::string <a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m0">BigFileName</a>;
00118 <font class="comment">// map of files in the BNP.</font>
<a name="l00119"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m1">00119</a> std::map<std::string, BNPFile> <a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m1">Files</a>;
00120 <font class="comment">// Since many seek may be done on a FILE*, each thread should have its own FILE opened.</font>
<a name="l00121"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m2">00121</a> uint32 <a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m2">ThreadFileId</a>;
<a name="l00122"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m3">00122</a> <font class="keywordtype">bool</font> <a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m3">CacheFileOnOpen</a>;
<a name="l00123"></a><a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m4">00123</a> <font class="keywordtype">bool</font> <a class="code" href="structNLMISC_1_1CBigFile_1_1BNP.html#m4">AlwaysOpened</a>;
00124 };
00125 <font class="keyword">private</font>:
00126
00127 <a class="code" href="classNLMISC_1_1CBigFile.html#c0">CBigFile</a>(); <font class="comment">// Singleton mode -> access it with the getInstance function</font>
00128
00129 <font class="keyword">static</font> <a class="code" href="classNLMISC_1_1CBigFile.html#c0">CBigFile</a> *<a class="code" href="classNLMISC_1_1CBigFile.html#r0">_Singleton</a>;
00130
00131 <font class="comment">// This is an array of CHandleFile, unique to each thread</font>
<a name="l00132"></a><a class="code" href="classNLMISC_1_1CBigFile.html#o0">00132</a> <a class="code" href="classNLMISC_1_1CBigFile.html#l0">CThreadFileArray</a> <a class="code" href="classNLMISC_1_1CBigFile.html#o0">_ThreadFileArray</a>;
00133
<a name="l00134"></a><a class="code" href="classNLMISC_1_1CBigFile.html#o1">00134</a> std::map<std::string, BNP> <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>;
00135 };
00136
00137 } <font class="comment">// NLMISC</font>
00138
00139
00140 <font class="preprocessor">#endif // NL_BIG_FILE_H</font>
00141 <font class="preprocessor"></font>
00142 <font class="comment">/* End of big_file.h */</font>
</pre></div>
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