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<hr><h1>heap_memory.h</h1><a href="heap__memory_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2001 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_HEAP_MEMORY_H</font>
00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_HEAP_MEMORY_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 <map></font>
00031
00032
00033 <font class="keyword">namespace </font>NLMISC
00034 {
00035
00036
00037 <font class="comment">// ***************************************************************************</font>
<a name="l00046"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html">00046</a> <font class="comment"></font><font class="keyword">class </font>CHeapMemory
00047 {
00048 <font class="keyword">public</font>:
00049
00051 <a class="code" href="classNLMISC_1_1CHeapMemory.html#a0">CHeapMemory</a>();
00052 <a class="code" href="classNLMISC_1_1CHeapMemory.html#a1">~CHeapMemory</a>();
00053
00055 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#a2">reset</a>();
00063 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#a3">initHeap</a>(<font class="keywordtype">void</font> *heap, uint size, uint align=4);
00064
00065
<a name="l00067"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#a4">00067</a> uint <a class="code" href="classNLMISC_1_1CHeapMemory.html#a4">getHeapSize</a>()<font class="keyword"> const </font>{<font class="keywordflow">return</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#o1">_HeapSize</a>;}
<a name="l00069"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#a5">00069</a> uint <a class="code" href="classNLMISC_1_1CHeapMemory.html#a5">getHeapSizeUsed</a>()<font class="keyword"> const </font>{<font class="keywordflow">return</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#o2">_HeapSizeUsed</a>;}
00070
00071
00075 <font class="keywordtype">void</font> *<a class="code" href="classNLMISC_1_1CHeapMemory.html#a6">allocate</a>(uint size);
00077 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#a7">free</a>(<font class="keywordtype">void</font> *ptr);
00078
00079
00080 <font class="comment">// *********************</font>
00081 <font class="keyword">private</font>:
00082
00083 <font class="comment">// The map size -> EmptySpace.</font>
<a name="l00084"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u0">00084</a> <font class="keyword">typedef</font> std::multimap<uint, uint8*> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u0">TEmptySpaceSizeMap</a>;
<a name="l00085"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u1">00085</a> <font class="keyword">typedef</font> TEmptySpaceSizeMap::iterator <a class="code" href="classNLMISC_1_1CHeapMemory.html#u1">ItEmptySpaceSizeMap</a>;
00086
00087
<a name="l00088"></a><a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html">00088</a> <font class="keyword">struct </font>CEmptySpace
00089 {
00090 <font class="comment">// The adress of this empty space, in the heap</font>
<a name="l00091"></a><a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m0">00091</a> uint8 *<a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m0">Ptr</a>;
00092 <font class="comment">// The size of this empty space.</font>
<a name="l00093"></a><a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m1">00093</a> uint <a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m1">Size</a>;
00094 <font class="comment">// An iterator of his place in the TEmptySpaceMap.</font>
<a name="l00095"></a><a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m2">00095</a> ItEmptySpaceSizeMap <a class="code" href="structNLMISC_1_1CHeapMemory_1_1CEmptySpace.html#m2">SizeIt</a>;
00096 };
00097
00098
00099 <font class="comment">// The map ptr -> EmptySpace.</font>
<a name="l00100"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u2">00100</a> <font class="keyword">typedef</font> std::map<uint8*, CEmptySpace> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u2">TEmptySpacePtrMap</a>;
<a name="l00101"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u3">00101</a> <font class="keyword">typedef</font> TEmptySpacePtrMap::iterator <a class="code" href="classNLMISC_1_1CHeapMemory.html#u3">ItEmptySpacePtrMap</a>;
00102
00103
00104 <font class="comment">// The map ptr -> size: AllocatedSpace;</font>
<a name="l00105"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u4">00105</a> <font class="keyword">typedef</font> std::map<uint8*, uint> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u4">TAllocatedSpaceMap</a>;
<a name="l00106"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#u5">00106</a> <font class="keyword">typedef</font> TAllocatedSpaceMap::iterator <a class="code" href="classNLMISC_1_1CHeapMemory.html#u5">ItAllocatedSpaceMap</a>;
00107
00108
00109 <font class="keyword">private</font>:
<a name="l00110"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o0">00110</a> uint8 *<a class="code" href="classNLMISC_1_1CHeapMemory.html#o0">_HeapPtr</a>;
<a name="l00111"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o1">00111</a> uint <a class="code" href="classNLMISC_1_1CHeapMemory.html#o1">_HeapSize</a>;
<a name="l00112"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o2">00112</a> uint <a class="code" href="classNLMISC_1_1CHeapMemory.html#o2">_HeapSizeUsed</a>;
<a name="l00113"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o3">00113</a> uint <a class="code" href="classNLMISC_1_1CHeapMemory.html#o3">_Alignment</a>;
00114
<a name="l00116"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o4">00116</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u2">TEmptySpacePtrMap</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#o4">_EmptySpaces</a>;
<a name="l00118"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o5">00118</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u0">TEmptySpaceSizeMap</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#o5">_EmptySpaceMap</a>;
00119 <font class="comment">// The map of allocated blocks.</font>
<a name="l00120"></a><a class="code" href="classNLMISC_1_1CHeapMemory.html#o6">00120</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#u4">TAllocatedSpaceMap</a> <a class="code" href="classNLMISC_1_1CHeapMemory.html#o6">_AllocatedSpaceMap</a>;
00121
00122
00123 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#c0">removeEmptySpace</a>(CEmptySpace &space);
00124 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CHeapMemory.html#c1">addEmptySpace</a>(CEmptySpace &space);
00125 };
00126
00127
00128 } <font class="comment">// NLMISC</font>
00129
00130
00131 <font class="preprocessor">#endif // NL_HEAP_MEMORY_H</font>
00132 <font class="preprocessor"></font>
00133 <font class="comment">/* End of heap_memory.h */</font>
</pre></div>
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