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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 &amp;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> &amp;<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 &amp;callback)
00073 {
00074         CSynchronized&lt;list&lt;IRunnable *&gt; &gt;::CAccessor acces(&amp;<a class="code" href="classNLMISC_1_1CTaskManager.html#n0">_TaskQueue</a>);
00075         list&lt;IRunnable*&gt; &amp;rTaskQueue = acces.value ();
00076         list&lt;IRunnable*&gt;::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&amp; 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&amp; sMeshName)</font>
00109 <font class="comment">{</font>
00110 <font class="comment">        CSynchronized&lt;list&lt;IRunnable *&gt; &gt;::CAccessor acces(&amp;_TaskQueue);</font>
00111 <font class="comment">        list&lt;IRunnable*&gt; &amp;rTaskQueue = acces.value ();</font>
00112 <font class="comment">        list&lt;IRunnable*&gt;::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&lt;CMeshLoad*&gt;(pR);</font>
00118 <font class="comment">                if (pML != NULL)</font>
00119 <font class="comment">                {</font>
00120 <font class="comment">                        if (pML-&gt;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&amp; 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&amp; 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&amp; 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&lt;std::string&gt; &amp;vFileNames, <font class="keyword">const</font> std::vector&lt;uint8**&gt; &amp;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&lt;list&lt;IRunnable *&gt; &gt;::CAccessor acces(&amp;<a class="code" href="classNLMISC_1_1CTaskManager.html#n0">_TaskQueue</a>);
00173         list&lt;IRunnable*&gt; &amp;rTaskQueue = acces.value ();
00174         list&lt;IRunnable*&gt;::iterator it = rTaskQueue.begin();
00175 
00176         <font class="keywordflow">while</font> (it != rTaskQueue.end())
00177         {
00178                 IRunnable *pR = *it;
00179                 CSignal *pS = dynamic_cast&lt;CSignal*&gt;(pR);
00180                 <font class="keywordflow">if</font> (pS != NULL)
00181                 {
00182                         <font class="keywordflow">if</font> (pS-&gt;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&amp; 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&lt;std::string&gt; &amp;vFileNames, 
00235                                                                                                                  <font class="keyword">const</font> std::vector&lt;uint8**&gt; &amp;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 &lt; <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 
</pre></div>

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