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<hr><h1>path_mesh_alloc.h</h1><a href="path_mesh_alloc_h.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">#ifndef NL_PATH_MESH_ALLOC_H
</font>00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_PATH_MESH_ALLOC_H
</font>00028 <font class="preprocessor"></font>
00029 <font class="preprocessor">#include "<a class="code" href="types_nl_h.html">nel/misc/types_nl.h</a>"</font>
00030 <font class="preprocessor">#include <vector></font>
00031 <font class="preprocessor">#include <list></font>
00032
00033 template <class T>
<a name="l00034"></a><a class="code" href="class_CArrayElement.html">00034</a> <font class="keyword">class </font><a class="code" href="class_CArrayElement.html">CArrayElement</a>
00035 {
00036 <font class="keyword">public</font>:
<a name="l00037"></a><a class="code" href="class_CArrayElement.html#a0">00037</a> <a class="code" href="class_CArrayElement.html#a0">CArrayElement</a> (uint defaultSize)<font class="keyword">
</font>00038 <font class="keyword"> </font>{
00039 _Array.reserve (defaultSize);
00040 _Allocated=<font class="keyword">false</font>;
00041 }
<a name="l00042"></a><a class="code" href="class_CArrayElement.html#m0">00042</a> <font class="keywordtype">bool</font> _Allocated;
<a name="l00043"></a><a class="code" href="class_CArrayElement.html#m1">00043</a> std::vector<T> _Array;
00044 };
00045
00052 template <class T>
<a name="l00053"></a><a class="code" href="class_CPathMeshAlloc.html">00053</a> <font class="keyword">class </font><a class="code" href="class_CPathMeshAlloc.html">CPathMeshAlloc</a>
00054 {
00055 <font class="keyword">public</font>:
00056
<a name="l00058"></a><a class="code" href="class_CPathMeshAlloc.html#a0">00058</a> <a class="code" href="class_CPathMeshAlloc.html#a0">CPathMeshAlloc</a>(uint defaultSize)<font class="keyword">
</font>00059 <font class="keyword"> </font>{
00060 _DefaultSize=defaultSize;
00061 _BlockAllocated=0;
00062 }
00063
00064 <font class="comment">// Allocate a vector</font>
<a name="l00065"></a><a class="code" href="class_CPathMeshAlloc.html#a1">00065</a> std::vector<T>* <a class="code" href="class_CPathMeshAlloc.html#a1">allocate</a> ()<font class="keyword">
</font>00066 <font class="keyword"> </font>{
00067 _BlockAllocated++;
00068
00069 <font class="comment">// Some trace</font>
00070 <a class="code" href="debug_h.html#a0">nldebug</a> (<font class="stringliteral">"Allocate, %d blocks %d max\n"</font>, _BlockAllocated, _ArrayList.size());
00071
00072 <font class="comment">// Look for a free element</font>
00073 ListArray::iterator ite=_ArrayList.begin();
00074
00075 <font class="comment">// for each element</font>
00076 <font class="keywordflow">while</font> (ite!=_ArrayList.end())
00077 {
00078 <font class="comment">// Find one ?</font>
00079 <font class="keywordflow">if</font> (!ite->get()->_Allocated)
00080 {
00081 ite->get()->_Allocated=<font class="keyword">true</font>;
00082 <font class="keywordflow">return</font> &ite->get()->_Array;
00083 }
00084 ite++;
00085 }
00086
00087 <font class="comment">// ** Not find, add an entry</font>
00088
00089 <font class="comment">// Create</font>
00090 <a class="code" href="class_CArrayElement.html">CArrayElement<T></a> *pElement=<font class="keyword">new</font> <a class="code" href="class_CArrayElement.html">CArrayElement<T></a> (_DefaultSize);
00091
00092 <font class="comment">// Push back the enrty</font>
00093 _ArrayList.push_back (std::auto_ptr<CArrayElement<T> > (pElement));
00094 ite=_ArrayList.end();
00095 ite--;
00096 ite->get()->_Allocated=<font class="keyword">true</font>;
00097 <font class="keywordflow">return</font> &ite->get()->_Array;
00098 }
00099
00100 <font class="comment">// Free a vector</font>
<a name="l00101"></a><a class="code" href="class_CPathMeshAlloc.html#a2">00101</a> <font class="keywordtype">void</font> <a class="code" href="class_CPathMeshAlloc.html#a2">free</a> (std::vector<T>* ptr)<font class="keyword">
</font>00102 <font class="keyword"> </font>{
00103 _BlockAllocated--;
00104
00105 <font class="comment">// Some trace</font>
00106 <a class="code" href="debug_h.html#a0">nldebug</a> (<font class="stringliteral">"Allocate, %d blocks %d max\n"</font>, _BlockAllocated, _ArrayList.size());
00107
00108 <font class="comment">// Look for the good array</font>
00109 ListArray::iterator ite=_ArrayList.begin();
00110
00111 <font class="comment">// for each element</font>
00112 <font class="keywordflow">while</font> (ite!=_ArrayList.end())
00113 {
00114 <font class="comment">// Find one ?</font>
00115 <font class="keywordflow">if</font> (&ite->get()->_Array==ptr)
00116 {
00117 ite->get()->_Allocated=<font class="keyword">false</font>;
00118 <font class="keywordflow">return</font>;
00119 }
00120 ite++;
00121 }
00122
00123 <font class="comment">// No, should be somewhere</font>
00124 <a class="code" href="debug_h.html#a6">nlassert</a> (0); <font class="comment">// no!</font>
00125 }
00126
00127 <font class="keyword">private</font>:
00128 <font class="comment">// Typedef </font>
<a name="l00129"></a><a class="code" href="class_CPathMeshAlloc.html#u0">00129</a> <font class="keyword">typedef</font> std::list< std::auto_ptr<CArrayElement<T> > > ListArray;
00130
<a name="l00131"></a><a class="code" href="class_CPathMeshAlloc.html#o0">00131</a> uint _DefaultSize;
<a name="l00132"></a><a class="code" href="class_CPathMeshAlloc.html#o1">00132</a> uint _BlockAllocated;
<a name="l00133"></a><a class="code" href="class_CPathMeshAlloc.html#o2">00133</a> ListArray _ArrayList;
00134 };
00135
00136 <font class="preprocessor">#endif // NL_PATH_MESH_ALLOC_H
</font>00137 <font class="preprocessor"></font>
00138 <font class="comment">/* End of path_mesh_alloc.h */</font>
</div></pre>
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