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<hr><h1>async_file_manager.cpp</h1><a href="async__file__manager_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 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
00026 <font class="preprocessor">#include "<a class="code" href="file_8h.html">nel/misc/file.h</a>"</font>
00027 <font class="preprocessor">#include "<a class="code" href="path_8h.html">nel/misc/path.h</a>"</font>
00028 <font class="preprocessor">#include "<a class="code" href="async__file__manager_8h.html">nel/misc/async_file_manager.h</a>"</font>
00029
00030
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00032
00033 <font class="keyword">namespace </font>NLMISC
00034 {
00035
<a name="l00036"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">00036</a> CAsyncFileManager *CAsyncFileManager::_Singleton = NULL;
00037
00038 <font class="comment">// ***************************************************************************</font>
00039
<a name="l00040"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#c0">00040</a> CAsyncFileManager::CAsyncFileManager()
00041 {
00042 }
00043
00044 <font class="comment">// ***************************************************************************</font>
00045
<a name="l00046"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#d0">00046</a> CAsyncFileManager &CAsyncFileManager::getInstance()
00047 {
00048 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">_Singleton</a> == NULL)
00049 {
00050 <a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">_Singleton</a> = <font class="keyword">new</font> <a class="code" href="classNLMISC_1_1CAsyncFileManager.html#c0">CAsyncFileManager</a>();
00051 }
00052 <font class="keywordflow">return</font> *<a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">_Singleton</a>;
00053 }
00054
00055 <font class="comment">// ***************************************************************************</font>
00056
<a name="l00057"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#d1">00057</a> <font class="keywordtype">void</font> CAsyncFileManager::terminate ()
00058 {
00059 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">_Singleton</a> != NULL)
00060 {
00061 <font class="keyword">delete</font> &<a class="code" href="classNLMISC_1_1CAsyncFileManager.html#d0">getInstance</a>();
00062 <a class="code" href="classNLMISC_1_1CAsyncFileManager.html#r0">_Singleton</a> = NULL;
00063 }
00064 }
00065
00066
<a name="l00067"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a4">00067</a> <font class="keywordtype">void</font> CAsyncFileManager::addLoadTask(IRunnable *ploadTask)
00068 {
00069 <a class="code" href="classNLMISC_1_1CTaskManager.html#a3">addTask</a>(ploadTask);
00070 }
00071
<a name="l00072"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a5">00072</a> <font class="keywordtype">bool</font> CAsyncFileManager::cancelLoadTask(<font class="keyword">const</font> CAsyncFileManager::ICancelCallback &callback)
00073 {
00074 CSynchronized<list<IRunnable *> >::CAccessor acces(&<a class="code" href="classNLMISC_1_1CTaskManager.html#n0">_TaskQueue</a>);
00075 list<IRunnable*> &rTaskQueue = acces.value ();
00076 list<IRunnable*>::iterator it = rTaskQueue.begin();
00077
00078 <font class="keywordflow">while</font> (it != rTaskQueue.end())
00079 {
00080 IRunnable *pR = *it;
00081
00082 <font class="comment">// check the task with the cancel callback.</font>
00083 <font class="keywordflow">if</font> (callback.callback(pR))
00084 {
00085 <font class="comment">// Delete the load task</font>
00086 <font class="keyword">delete</font> pR;
00087 rTaskQueue.erase (it);
00088 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00089 }
00090 ++it;
00091 }
00092
00093 <font class="comment">// If not found, the current running task may be the one we want to cancel. Must wait it.</font>
00094 <a class="code" href="classNLMISC_1_1CTaskManager.html#b0">waitCurrentTaskToComplete</a> ();
00095
00096 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00097 }
00098
00099 <font class="comment">// ***************************************************************************</font>
00100 <font class="comment">/* </font>
00101 <font class="comment">void CAsyncFileManager::loadMesh(const std::string& meshName, IShape **ppShp, IDriver *pDriver)</font>
00102 <font class="comment">{</font>
00103 <font class="comment"> addTask (new CMeshLoad(meshName, ppShp, pDriver));</font>
00104 <font class="comment">}</font>
00105 <font class="comment">*/</font>
00106 <font class="comment">// ***************************************************************************</font>
00107 <font class="comment">/*</font>
00108 <font class="comment">bool CAsyncFileManager::cancelLoadMesh(const std::string& sMeshName)</font>
00109 <font class="comment">{</font>
00110 <font class="comment"> CSynchronized<list<IRunnable *> >::CAccessor acces(&_TaskQueue);</font>
00111 <font class="comment"> list<IRunnable*> &rTaskQueue = acces.value ();</font>
00112 <font class="comment"> list<IRunnable*>::iterator it = rTaskQueue.begin();</font>
00113 <font class="comment"></font>
00114 <font class="comment"> while (it != rTaskQueue.end())</font>
00115 <font class="comment"> {</font>
00116 <font class="comment"> IRunnable *pR = *it;</font>
00117 <font class="comment"> CMeshLoad *pML = dynamic_cast<CMeshLoad*>(pR);</font>
00118 <font class="comment"> if (pML != NULL)</font>
00119 <font class="comment"> {</font>
00120 <font class="comment"> if (pML->MeshName == sMeshName)</font>
00121 <font class="comment"> {</font>
00122 <font class="comment"> // Delete mesh load task</font>
00123 <font class="comment"> delete pML;</font>
00124 <font class="comment"> rTaskQueue.erase (it);</font>
00125 <font class="comment"> return true;</font>
00126 <font class="comment"> }</font>
00127 <font class="comment"> }</font>
00128 <font class="comment"> ++it;</font>
00129 <font class="comment"> }</font>
00130 <font class="comment"> return false;</font>
00131 <font class="comment">}</font>
00132 <font class="comment">*/</font>
00133 <font class="comment">// ***************************************************************************</font>
00134 <font class="comment">/* </font>
00135 <font class="comment">void CAsyncFileManager::loadIG (const std::string& IGName, CInstanceGroup **ppIG)</font>
00136 <font class="comment">{</font>
00137 <font class="comment"> addTask (new CIGLoad(IGName, ppIG));</font>
00138 <font class="comment">}</font>
00139 <font class="comment"></font>
00140 <font class="comment">// ***************************************************************************</font>
00141 <font class="comment"> </font>
00142 <font class="comment">void CAsyncFileManager::loadIGUser (const std::string& IGName, UInstanceGroup **ppIG)</font>
00143 <font class="comment">{</font>
00144 <font class="comment"> addTask (new CIGLoadUser(IGName, ppIG));</font>
00145 <font class="comment">}</font>
00146 <font class="comment">*/</font>
00147 <font class="comment">// ***************************************************************************</font>
00148
<a name="l00149"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a0">00149</a> <font class="keywordtype">void</font> CAsyncFileManager::loadFile (<font class="keyword">const</font> std::string& sFileName, uint8 **ppFile)
00150 {
00151 <a class="code" href="classNLMISC_1_1CTaskManager.html#a3">addTask</a> (<font class="keyword">new</font> CFileLoad (sFileName, ppFile));
00152 }
00153
00154 <font class="comment">// ***************************************************************************</font>
00155
<a name="l00156"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a1">00156</a> <font class="keywordtype">void</font> CAsyncFileManager::loadFiles (<font class="keyword">const</font> std::vector<std::string> &vFileNames, <font class="keyword">const</font> std::vector<uint8**> &vPtrs)
00157 {
00158 <a class="code" href="classNLMISC_1_1CTaskManager.html#a3">addTask</a> (<font class="keyword">new</font> CMultipleFileLoad (vFileNames, vPtrs));
00159 }
00160
00161 <font class="comment">// ***************************************************************************</font>
00162
<a name="l00163"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a2">00163</a> <font class="keywordtype">void</font> CAsyncFileManager::signal (<font class="keywordtype">bool</font> *pSgn)
00164 {
00165 <a class="code" href="classNLMISC_1_1CTaskManager.html#a3">addTask</a> (<font class="keyword">new</font> CSignal (pSgn));
00166 }
00167
00168 <font class="comment">// ***************************************************************************</font>
00169
<a name="l00170"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager.html#a3">00170</a> <font class="keywordtype">void</font> CAsyncFileManager::cancelSignal (<font class="keywordtype">bool</font> *pSgn)
00171 {
00172 CSynchronized<list<IRunnable *> >::CAccessor acces(&<a class="code" href="classNLMISC_1_1CTaskManager.html#n0">_TaskQueue</a>);
00173 list<IRunnable*> &rTaskQueue = acces.value ();
00174 list<IRunnable*>::iterator it = rTaskQueue.begin();
00175
00176 <font class="keywordflow">while</font> (it != rTaskQueue.end())
00177 {
00178 IRunnable *pR = *it;
00179 CSignal *pS = dynamic_cast<CSignal*>(pR);
00180 <font class="keywordflow">if</font> (pS != NULL)
00181 {
00182 <font class="keywordflow">if</font> (pS->Sgn == pSgn)
00183 {
00184 <font class="comment">// Delete signal task</font>
00185 <font class="keyword">delete</font> pS;
00186 rTaskQueue.erase (it);
00187 <font class="keywordflow">return</font>;
00188 }
00189 }
00190 ++it;
00191 }
00192 }
00193
00194 <font class="comment">// ***************************************************************************</font>
00195 <font class="comment">// FileLoad</font>
00196 <font class="comment">// ***************************************************************************</font>
00197
00198 <font class="comment">// ***************************************************************************</font>
<a name="l00199"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#a0">00199</a> CAsyncFileManager::CFileLoad::CFileLoad (<font class="keyword">const</font> std::string& sFileName, uint8 **ppFile)
00200 {
00201 <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o0">_FileName</a> = sFileName;
00202 <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o1">_ppFile</a> = ppFile;
00203 }
00204
00205 <font class="comment">// ***************************************************************************</font>
<a name="l00206"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#a1">00206</a> <font class="keywordtype">void</font> CAsyncFileManager::CFileLoad::run (<font class="keywordtype">void</font>)
00207 {
00208 FILE *f = fopen (<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o0">_FileName</a>.c_str(), <font class="stringliteral">"rb"</font>);
00209 <font class="keywordflow">if</font> (f != NULL)
00210 {
00211 uint8 *ptr;
00212 fseek (f, 0, SEEK_END);
00213 <font class="keywordtype">long</font> filesize = ftell (f);
00214 <a class="code" href="namespaceNLMISC.html#a236">nlSleep</a>(5);
00215 fseek (f, 0, SEEK_SET);
00216 ptr = <font class="keyword">new</font> uint8[filesize];
00217 fread (ptr, filesize, 1, f);
00218 fclose (f);
00219
00220 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o1">_ppFile</a> = ptr;
00221 }
00222 <font class="keywordflow">else</font>
00223 {
00224 <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"Couldn't load '%s'"</font>, <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o0">_FileName</a>.c_str());
00225 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CFileLoad.html#o1">_ppFile</a> = (uint8*)-1;
00226 }
00227 }
00228
00229 <font class="comment">// ***************************************************************************</font>
00230 <font class="comment">// MultipleFileLoad</font>
00231 <font class="comment">// ***************************************************************************</font>
00232
00233 <font class="comment">// ***************************************************************************</font>
<a name="l00234"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#a0">00234</a> CAsyncFileManager::CMultipleFileLoad::CMultipleFileLoad (<font class="keyword">const</font> std::vector<std::string> &vFileNames,
00235 <font class="keyword">const</font> std::vector<uint8**> &vPtrs)
00236 {
00237 <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o0">_FileNames</a> = vFileNames;
00238 <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o1">_Ptrs</a> = vPtrs;
00239 }
00240
00241 <font class="comment">// ***************************************************************************</font>
<a name="l00242"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#a1">00242</a> <font class="keywordtype">void</font> CAsyncFileManager::CMultipleFileLoad::run (<font class="keywordtype">void</font>)
00243 {
00244 <font class="keywordflow">for</font> (uint32 i = 0; i < <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o0">_FileNames</a>.size(); ++i)
00245 {
00246 FILE *f = fopen (<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o0">_FileNames</a>[i].c_str(), <font class="stringliteral">"rb"</font>);
00247 <font class="keywordflow">if</font> (f != NULL)
00248 {
00249 uint8 *ptr;
00250 fseek (f, 0, SEEK_END);
00251 <font class="keywordtype">long</font> filesize = ftell (f);
00252 <a class="code" href="namespaceNLMISC.html#a236">nlSleep</a>(5);
00253 fseek (f, 0, SEEK_SET);
00254 ptr = <font class="keyword">new</font> uint8[filesize];
00255 fread (ptr, filesize, 1, f);
00256 fclose (f);
00257
00258 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o1">_Ptrs</a>[i] = ptr;
00259 }
00260 <font class="keywordflow">else</font>
00261 {
00262 <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"Couldn't load '%s'"</font>, <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o0">_FileNames</a>[i].c_str());
00263 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CMultipleFileLoad.html#o1">_Ptrs</a>[i] = (uint8*)-1;
00264 }
00265 }
00266
00267 }
00268
00269 <font class="comment">// ***************************************************************************</font>
00270 <font class="comment">// Signal</font>
00271 <font class="comment">// ***************************************************************************</font>
00272
00273 <font class="comment">// ***************************************************************************</font>
<a name="l00274"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CSignal.html#a0">00274</a> CAsyncFileManager::CSignal::CSignal (<font class="keywordtype">bool</font> *pSgn)
00275 {
00276 <a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CSignal.html#m0">Sgn</a> = pSgn;
00277 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CSignal.html#m0">Sgn</a> = <font class="keyword">false</font>;
00278 }
00279
00280 <font class="comment">// ***************************************************************************</font>
<a name="l00281"></a><a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CSignal.html#a1">00281</a> <font class="keywordtype">void</font> CAsyncFileManager::CSignal::run (<font class="keywordtype">void</font>)
00282 {
00283 *<a class="code" href="classNLMISC_1_1CAsyncFileManager_1_1CSignal.html#m0">Sgn</a> = <font class="keyword">true</font>;
00284 }
00285
00286
00287 } <font class="comment">// NLMISC</font>
00288
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