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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>stl_block_allocator.h</h1><a href="stl__block__allocator_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_STL_BLOCK_ALLOCATOR_H</font> +00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_STL_BLOCK_ALLOCATOR_H</font> +00028 <font class="preprocessor"></font> +00029 +00030 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font> +00031 <font class="preprocessor">#include "<a class="code" href="block__memory_8h.html">nel/misc/block_memory.h</a>"</font> +00032 +00033 +00034 <font class="keyword">namespace </font>NLMISC { +00035 +00036 +00037 <font class="comment">// ***************************************************************************</font> +00067 <font class="comment"></font><font class="preprocessor">#ifdef NL_OS_WINDOWS</font> +00068 <font class="preprocessor"></font> +00069 <font class="keyword">template</font><<font class="keyword">class</font> T> +00070 <font class="keyword">class </font>CSTLBlockAllocator +00071 { +00072 <font class="keyword">public</font>: +00073 +00075 <font class="comment">// @{</font> +00076 +00077 <font class="keyword">typedef</font> T value_type; +00078 <font class="keyword">typedef</font> value_type *<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a>; +00079 <font class="keyword">typedef</font> <font class="keyword">const</font> T* const_pointer; +00080 <font class="keyword">typedef</font> T& reference; +00081 <font class="keyword">typedef</font> <font class="keyword">const</font> T& const_reference; +00082 <font class="keyword">typedef</font> size_t size_type; +00083 <font class="keyword">typedef</font> ptrdiff_t difference_type; +00084 +00085 +00086 <a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> adress(reference <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)<font class="keyword"> const</font> +00087 <font class="keyword"> </font>{ +00088 <font class="keywordflow">return</font> &<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>; +00089 } +00090 +00091 const_pointer adress(const_reference <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)<font class="keyword"> const</font> +00092 <font class="keyword"> </font>{ +00093 <font class="keywordflow">return</font> &<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>; +00094 } +00095 +00096 <font class="keywordtype">void</font> construct(<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> p, <font class="keyword">const</font> T &val) +00097 { +00098 <font class="keyword">new</font> (p) T(val); +00099 } +00100 +00101 <font class="keywordtype">void</font> destroy(<a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> p) +00102 { +00103 p->T::~T(); +00104 } +00105 +00106 <font class="comment">// @}</font> +00107 +00108 <font class="keyword">public</font>: +00109 +00111 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(CBlockMemory<T, false> *bm) : _BlockMemory(bm) +00112 { +00113 } +00115 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(<font class="keyword">const</font> CSTLBlockAllocator<T> &other) : _BlockMemory(other._BlockMemory) +00116 { +00117 <font class="comment">// just copy the block memory from the other allocator.</font> +00118 } +00120 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a2">~CSTLBlockAllocator</a>() +00121 { +00122 _BlockMemory= NULL; +00123 } +00124 +00125 +00126 <a class="code" href="driver__opengl__extension__def_8h.html#a362">pointer</a> allocate(size_type n, const_pointer hint= NULL) +00127 { +00128 <font class="keywordflow">if</font>(n==0) +00129 <font class="keywordflow">return</font> NULL; +00130 <font class="comment">// If sizeof 1, use CBlockMemory allocation</font> +00131 <font class="keywordflow">if</font>(n==1) +00132 { +00133 <font class="preprocessor">#ifdef NL_DEBUG</font> +00134 <font class="preprocessor"></font> <font class="comment">// verify that we allocate with good size!! (verify __stl_alloc_rebind scheme).</font> +00135 <font class="comment">// ie an allocator can be used only to allocate a kind of element</font> +00136 uint eltSize= std::max(<font class="keyword">sizeof</font>(T), <font class="keyword">sizeof</font>(<font class="keywordtype">void</font>*)); +00137 <a class="code" href="debug_8h.html#a6">nlassert</a>( eltSize == _BlockMemory->__stl_alloc_getEltSize() ); +00138 <font class="preprocessor">#endif</font> +00139 <font class="preprocessor"></font> <font class="comment">// and allocate.</font> +00140 <font class="keywordflow">return</font> _BlockMemory->allocate(); +00141 } +00142 <font class="comment">// else use std malloc</font> +00143 <font class="keywordflow">else</font> +00144 <font class="keywordflow">return</font> (T*)<font class="keyword">new</font> uint8[n*<font class="keyword">sizeof</font>(T)]; +00145 } +00146 +00147 <font class="keywordtype">void</font> deallocate(<font class="keywordtype">void</font> *p, size_type n) +00148 { +00149 <font class="keywordflow">if</font>(n==0) +00150 <font class="keywordflow">return</font>; +00151 <font class="comment">// If sizeof 1, use CBlockMemory allocation</font> +00152 <font class="keywordflow">if</font>(n==1) +00153 _BlockMemory->free((T*)p); +00154 <font class="comment">// else use std free</font> +00155 <font class="keywordflow">else</font> +00156 <font class="keyword">delete</font> [] ((uint8*)p); +00157 } +00158 +00159 +00160 <font class="keyword">template</font> <<font class="keyword">class</font> _Tp, <font class="keyword">class</font> U> +00161 CSTLBlockAllocator<U>& __stl_alloc_rebind(CSTLBlockAllocator<_Tp>& __a, <font class="keyword">const</font> U*) +00162 { +00163 <font class="comment">// must change the internal eltSize of __a.</font> +00164 __a._BlockMemory->__stl_alloc_changeEltSize(<font class="keyword">sizeof</font>(U)); +00165 <font class="comment">// and just typecast/return him</font> +00166 <font class="keywordflow">return</font> (CSTLBlockAllocator<U>&)(__a); +00167 } +00168 +00169 <font class="keyword">template</font> <<font class="keyword">class</font> _Tp, <font class="keyword">class</font> U> +00170 CSTLBlockAllocator<U> __stl_alloc_create(<font class="keyword">const</font> CSTLBlockAllocator<_Tp>&, <font class="keyword">const</font> U*) +00171 { +00172 <font class="keywordflow">return</font> CSTLBlockAllocator<U>(); +00173 } +00174 +00175 +00176 +00177 <font class="comment">// *******************</font> +00178 <font class="keyword">private</font>: +00179 +00180 <font class="comment">// The blockMemory used to allocate elements</font> +00181 CBlockMemory<T, false> *_BlockMemory; +00182 +00183 }; +00184 +00185 +00186 <font class="preprocessor">#else // NL_OS_WINDOWS</font> +00187 <font class="preprocessor"></font> +00189 +00190 <font class="preprocessor"># if !defined (__STL_USE_SGI_ALLOCATORS)</font> +00191 <font class="preprocessor"></font><font class="keyword">template</font><<font class="keyword">class</font> T> +<a name="l00192"></a><a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html">00192</a> <font class="keyword">class </font>CSTLBlockAllocator : <font class="keyword">public</font> std::allocator< T > +00193 { +00194 <font class="keyword">public</font>: +00195 +<a name="l00197"></a><a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">00197</a> <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(CBlockMemory<T, false> *bm) +00198 { +00199 } +<a name="l00201"></a><a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a1">00201</a> <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(<font class="keyword">const</font> CSTLBlockAllocator<T> &other) : std::allocator<T>(other) +00202 { +00203 } +<a name="l00205"></a><a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a2">00205</a> <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a2">~CSTLBlockAllocator</a>() +00206 { +00207 } +00208 +00209 }; +00210 <font class="preprocessor"># else // !defined (__STL_USE_SGI_ALLOCATORS)</font> +00211 <font class="preprocessor"></font><font class="keyword">class </font>CSTLBlockAllocator : <font class="keyword">public</font> __sgi_alloc +00212 { +00213 <font class="keyword">public</font>: +00214 +00216 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(CBlockMemory<T, false> *bm) +00217 { +00218 } +00220 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a0">CSTLBlockAllocator</a>(<font class="keyword">const</font> CSTLBlockAllocator<T> &other) : __sgi_alloc(other) +00221 { +00222 } +00224 <a class="code" href="classNLMISC_1_1CSTLBlockAllocator.html#a2">~CSTLBlockAllocator</a>() +00225 { +00226 } +00227 +00228 }; +00229 <font class="preprocessor"># endif // !defined (__STL_USE_SGI_ALLOCATORS)</font> +00230 <font class="preprocessor"></font> +00231 +00232 <font class="preprocessor">#endif // NL_OS_WINDOWS</font> +00233 <font class="preprocessor"></font> +00234 +00235 +00236 } <font class="comment">// NLMISC</font> +00237 +00238 +00239 <font class="preprocessor">#endif // NL_STL_BLOCK_ALLOCATOR_H</font> +00240 <font class="preprocessor"></font> +00241 <font class="comment">/* End of stl_block_allocator.h */</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |