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| <hr><h1>ArenaAllocator.hpp</h1><a href="ArenaAllocator_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">/*</font> |
| 00002 <font class="comment"> * Copyright 1999-2004 The Apache Software Foundation.</font> |
| 00003 <font class="comment"> *</font> |
| 00004 <font class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</font> |
| 00005 <font class="comment"> * you may not use this file except in compliance with the License.</font> |
| 00006 <font class="comment"> * You may obtain a copy of the License at</font> |
| 00007 <font class="comment"> *</font> |
| 00008 <font class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</font> |
| 00009 <font class="comment"> *</font> |
| 00010 <font class="comment"> * Unless required by applicable law or agreed to in writing, software</font> |
| 00011 <font class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</font> |
| 00012 <font class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</font> |
| 00013 <font class="comment"> * See the License for the specific language governing permissions and</font> |
| 00014 <font class="comment"> * limitations under the License.</font> |
| 00015 <font class="comment"> */</font> |
| 00016 |
| 00017 <font class="preprocessor">#if !defined(ARENAALLOCATOR_INCLUDE_GUARD_1357924680)</font> |
| <a name="l00018"></a><a class="code" href="ArenaAllocator_8hpp.html#a0">00018</a> <font class="preprocessor"></font><font class="preprocessor">#define ARENAALLOCATOR_INCLUDE_GUARD_1357924680</font> |
| 00019 <font class="preprocessor"></font> |
| 00020 |
| 00021 |
| 00022 <font class="preprocessor">#include <algorithm></font> |
| 00023 |
| 00024 |
| 00025 |
| 00026 <font class="preprocessor">#include <<a class="code" href="STLHelper_8hpp.html">xalanc/Include/STLHelper.hpp</a>></font> |
| 00027 <font class="preprocessor">#include <<a class="code" href="XalanList_8hpp.html">xalanc/Include/XalanList.hpp</a>></font> |
| 00028 |
| 00029 |
| 00030 |
| 00031 <font class="preprocessor">#include "<a class="code" href="ArenaBlock_8hpp.html">ArenaBlock.hpp</a>"</font> |
| 00032 |
| 00033 |
| 00034 |
| 00035 XALAN_CPP_NAMESPACE_BEGIN |
| 00036 |
| 00037 |
| 00038 |
| 00039 <font class="keyword">template</font><<font class="keyword">class </font><a class="code" href="classXalanSourceTreeAttr.html">ObjectType</a>, |
| 00040 <font class="preprocessor">#if defined(XALAN_NO_DEFAULT_TEMPLATE_ARGUMENTS)</font> |
| 00041 <font class="preprocessor"></font> <font class="keyword">class </font>ArenaBlockType> |
| 00042 <font class="preprocessor">#else</font> |
| 00043 <font class="preprocessor"></font> <font class="keyword">class </font>ArenaBlockType = <a class="code" href="classArenaBlock.html">ArenaBlock</a><<a class="code" href="classXalanSourceTreeAttr.html">ObjectType</a>> > |
| 00044 #endif |
| <a name="l00045"></a><a class="code" href="classArenaAllocator.html">00045</a> class <a class="code" href="classArenaAllocator.html">ArenaAllocator</a> |
| 00046 { |
| 00047 <font class="keyword">public</font>: |
| 00048 |
| <a name="l00049"></a><a class="code" href="classArenaAllocator.html#s0">00049</a> <font class="keyword">typedef</font> <a class="code" href="classArenaAllocator.html">ArenaAllocator<ObjectType, ArenaBlockType></a> <a class="code" href="classXalanDeque.html">ThisType</a>; |
| 00050 |
| <a name="l00051"></a><a class="code" href="classArenaAllocator.html#s1">00051</a> <font class="keyword">typedef</font> <a class="code" href="classXalanList.html">XalanList<ArenaBlockType*></a> <a class="code" href="classXalanList.html">ArenaBlockListType</a>; |
| 00052 |
| <a name="l00053"></a><a class="code" href="classArenaAllocator.html#s2">00053</a> <font class="keyword">typedef</font> <font class="keyword">typename</font> ArenaBlockType::size_type size_type; |
| 00054 |
| 00055 <font class="comment">/*</font> |
| 00056 <font class="comment"> * Construct an instance that will allocate blocks of the specified size.</font> |
| 00057 <font class="comment"> *</font> |
| 00058 <font class="comment"> * @param theBlockSize The block size.</font> |
| 00059 <font class="comment"> */</font> |
| <a name="l00060"></a><a class="code" href="classArenaAllocator.html#a0">00060</a> <a class="code" href="classArenaAllocator.html#a0">ArenaAllocator</a>( |
| 00061 MemoryManagerType& theManager, |
| 00062 size_type theBlockSize) : |
| 00063 m_blockSize(theBlockSize), |
| 00064 m_blocks(theManager) |
| 00065 { |
| 00066 } |
| 00067 |
| 00068 <font class="keyword">virtual</font> |
| <a name="l00069"></a><a class="code" href="classArenaAllocator.html#a1">00069</a> <a class="code" href="classArenaAllocator.html#a1">~ArenaAllocator</a>()<font class="keyword"></font> |
| 00070 <font class="keyword"> </font>{ |
| 00071 <a class="code" href="classArenaAllocator.html#a10">reset</a>(); |
| 00072 } |
| 00073 |
| 00074 MemoryManagerType& |
| <a name="l00075"></a><a class="code" href="classArenaAllocator.html#a2">00075</a> <a class="code" href="classArenaAllocator.html#a2">getMemoryManager</a>()<font class="keyword"></font> |
| 00076 <font class="keyword"> </font>{ |
| 00077 <font class="keywordflow">return</font> m_blocks.<a class="code" href="classXalanList.html#a2">getMemoryManager</a>(); |
| 00078 } |
| 00079 |
| 00080 <font class="keyword">const</font> MemoryManagerType& |
| <a name="l00081"></a><a class="code" href="classArenaAllocator.html#a3">00081</a> <a class="code" href="classArenaAllocator.html#a2">getMemoryManager</a>()<font class="keyword"> const</font> |
| 00082 <font class="keyword"> </font>{ |
| 00083 <font class="keywordflow">return</font> m_blocks.<a class="code" href="classXalanList.html#a2">getMemoryManager</a>(); |
| 00084 } |
| 00085 |
| 00086 <font class="comment">/*</font> |
| 00087 <font class="comment"> * Get size of an ArenaBlock, that is, the number</font> |
| 00088 <font class="comment"> * of objects in each block.</font> |
| 00089 <font class="comment"> *</font> |
| 00090 <font class="comment"> * @return The size of the block</font> |
| 00091 <font class="comment"> */</font> |
| 00092 size_type |
| <a name="l00093"></a><a class="code" href="classArenaAllocator.html#a4">00093</a> <a class="code" href="classArenaAllocator.html#a4">getBlockSize</a>()<font class="keyword"> const</font> |
| 00094 <font class="keyword"> </font>{ |
| 00095 <font class="keywordflow">return</font> m_blockSize; |
| 00096 } |
| 00097 |
| 00098 <font class="comment">/*</font> |
| 00099 <font class="comment"> * Set size of an ArenaBlock, that is, the number</font> |
| 00100 <font class="comment"> * of objects in each block. Only affects blocks</font> |
| 00101 <font class="comment"> * allocated after the call.</font> |
| 00102 <font class="comment"> *</font> |
| 00103 <font class="comment"> * @param theSize The size of the block</font> |
| 00104 <font class="comment"> */</font> |
| 00105 <font class="keywordtype">void</font> |
| <a name="l00106"></a><a class="code" href="classArenaAllocator.html#a5">00106</a> <a class="code" href="classArenaAllocator.html#a5">setBlockSize</a>(size_type theSize)<font class="keyword"></font> |
| 00107 <font class="keyword"> </font>{ |
| 00108 m_blockSize = theSize; |
| 00109 } |
| 00110 |
| 00111 <font class="comment">/*</font> |
| 00112 <font class="comment"> * Get the number of ArenaBlocks currently allocated.</font> |
| 00113 <font class="comment"> *</font> |
| 00114 <font class="comment"> * @return The number of blocks.</font> |
| 00115 <font class="comment"> */</font> |
| 00116 size_type |
| <a name="l00117"></a><a class="code" href="classArenaAllocator.html#a6">00117</a> <a class="code" href="classArenaAllocator.html#a6">getBlockCount</a>()<font class="keyword"> const</font> |
| 00118 <font class="keyword"> </font>{ |
| 00119 <font class="keywordflow">return</font> (size_type)m_blocks.<a class="code" href="classXalanList.html#a14">size</a>(); |
| 00120 } |
| 00121 |
| 00122 <font class="comment">/*</font> |
| 00123 <font class="comment"> * Allocate a block of the appropriate size for an</font> |
| 00124 <font class="comment"> * object. Call commitAllocation() when after</font> |
| 00125 <font class="comment"> * the object is successfully constructed.</font> |
| 00126 <font class="comment"> *</font> |
| 00127 <font class="comment"> * @return A pointer to a block of memory</font> |
| 00128 <font class="comment"> */</font> |
| 00129 <font class="keyword">virtual</font> <a class="code" href="classXalanSourceTreeAttr.html">ObjectType</a>* |
| <a name="l00130"></a><a class="code" href="classArenaAllocator.html#a7">00130</a> <a class="code" href="classArenaAllocator.html#a7">allocateBlock</a>()<font class="keyword"></font> |
| 00131 <font class="keyword"> </font>{ |
| 00132 <font class="keywordflow">if</font> (m_blocks.<a class="code" href="classXalanList.html#a15">empty</a>() == <font class="keyword">true</font> || |
| 00133 m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->blockAvailable() == <font class="keyword">false</font>) |
| 00134 { |
| 00135 m_blocks.<a class="code" href="classXalanList.html#a16">push_back</a>( |
| 00136 ArenaBlockType::create( |
| 00137 <a class="code" href="classArenaAllocator.html#a2">getMemoryManager</a>(), |
| 00138 m_blockSize)); |
| 00139 } |
| 00140 assert( |
| 00141 m_blocks.<a class="code" href="classXalanList.html#a15">empty</a>() == <font class="keyword">false</font> && |
| 00142 m_blocks.<a class="code" href="classXalanList.html#a13">back</a>() != 0 && |
| 00143 m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->blockAvailable() == <font class="keyword">true</font>); |
| 00144 |
| 00145 <font class="keywordflow">return</font> m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->allocateBlock(); |
| 00146 } |
| 00147 |
| 00148 <font class="comment">/*</font> |
| 00149 <font class="comment"> * Commits the allocation of the previous</font> |
| 00150 <font class="comment"> * allocateBlock() call.</font> |
| 00151 <font class="comment"> *</font> |
| 00152 <font class="comment"> * @param theObject A pointer to a block of memory</font> |
| 00153 <font class="comment"> */</font> |
| 00154 <font class="keyword">virtual</font> <font class="keywordtype">void</font> |
| <a name="l00155"></a><a class="code" href="classArenaAllocator.html#a8">00155</a> <a class="code" href="classArenaAllocator.html#a8">commitAllocation</a>(<a class="code" href="classXalanSourceTreeAttr.html">ObjectType</a>* theObject)<font class="keyword"></font> |
| 00156 <font class="keyword"> </font>{ |
| 00157 assert( |
| 00158 m_blocks.<a class="code" href="classXalanList.html#a15">empty</a>() == <font class="keyword">false</font> && |
| 00159 m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->ownsBlock(theObject) == <font class="keyword">true</font>); |
| 00160 |
| 00161 m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->commitAllocation(theObject); |
| 00162 |
| 00163 assert(m_blocks.<a class="code" href="classXalanList.html#a13">back</a>()->ownsObject(theObject) == <font class="keyword">true</font>); |
| 00164 } |
| 00165 |
| 00166 <font class="keyword">virtual</font> <font class="keywordtype">bool</font> |
| <a name="l00167"></a><a class="code" href="classArenaAllocator.html#a9">00167</a> <a class="code" href="classArenaAllocator.html#a9">ownsObject</a>(<font class="keyword">const</font> <a class="code" href="classXalanSourceTreeAttr.html">ObjectType</a>* theObject)<font class="keyword"> const</font> |
| 00168 <font class="keyword"> </font>{ |
| 00169 <font class="keywordtype">bool</font> fResult = <font class="keyword">false</font>; |
| 00170 |
| 00171 <font class="keyword">typedef</font> <font class="keyword">typename</font> ArenaBlockListType::const_reverse_iterator const_reverse_iterator; |
| 00172 |
| 00173 <font class="comment">// Search back for a block that may have allocated the object...</font> |
| 00174 <font class="keyword">const</font> const_reverse_iterator theEnd = this->m_blocks.<a class="code" href="classXalanList.html#a10">rend</a>(); |
| 00175 |
| 00176 const_reverse_iterator i = this->m_blocks.<a class="code" href="classXalanList.html#a8">rbegin</a>(); |
| 00177 |
| 00178 <font class="keywordflow">while</font>(i != theEnd) |
| 00179 { |
| 00180 assert(*i != 0); |
| 00181 |
| 00182 <font class="keywordflow">if</font> ((*i)->ownsObject(theObject) == <font class="keyword">true</font>) |
| 00183 { |
| 00184 fResult = <font class="keyword">true</font>; |
| 00185 |
| 00186 <font class="keywordflow">break</font>; |
| 00187 } |
| 00188 <font class="keywordflow">else</font> |
| 00189 { |
| 00190 ++i; |
| 00191 } |
| 00192 } |
| 00193 |
| 00194 <font class="keywordflow">return</font> fResult; |
| 00195 } |
| 00196 |
| 00197 <font class="keyword">virtual</font> <font class="keywordtype">void</font> |
| <a name="l00198"></a><a class="code" href="classArenaAllocator.html#a10">00198</a> <a class="code" href="classArenaAllocator.html#a10">reset</a>()<font class="keyword"></font> |
| 00199 <font class="keyword"> </font>{ |
| 00200 XALAN_STD_QUALIFIER for_each( |
| 00201 m_blocks.<a class="code" href="classXalanList.html#a4">begin</a>(), |
| 00202 m_blocks.<a class="code" href="classXalanList.html#a6">end</a>(), |
| 00203 <a class="code" href="structDeleteFunctor.html">DeleteFunctor<ArenaBlockType></a>(m_blocks.<a class="code" href="classXalanList.html#a2">getMemoryManager</a>())); |
| 00204 |
| 00205 m_blocks.<a class="code" href="classXalanList.html#a24">clear</a>(); |
| 00206 } |
| 00207 |
| 00208 <font class="keyword">protected</font>: |
| 00209 |
| 00210 <font class="comment">// data members...</font> |
| <a name="l00211"></a><a class="code" href="classArenaAllocator.html#n0">00211</a> size_type m_blockSize; |
| 00212 |
| <a name="l00213"></a><a class="code" href="classArenaAllocator.html#n1">00213</a> <a class="code" href="classXalanList.html">ArenaBlockListType</a> m_blocks; |
| 00214 |
| 00215 <font class="keyword">private</font>: |
| 00216 |
| 00217 <font class="comment">// Not defined...</font> |
| 00218 <a class="code" href="classArenaAllocator.html#a0">ArenaAllocator</a>(<font class="keyword">const</font> <a class="code" href="classArenaAllocator.html">ArenaAllocator<ObjectType, ArenaBlockType></a>&); |
| 00219 |
| 00220 <a class="code" href="classArenaAllocator.html">ArenaAllocator<ObjectType, ArenaBlockType></a>& |
| 00221 operator=(<font class="keyword">const</font> <a class="code" href="classArenaAllocator.html">ArenaAllocator<ObjectType, ArenaBlockType></a>&); |
| 00222 |
| 00223 <font class="keywordtype">bool</font> |
| 00224 <a class="code" href="ElemAttributeSet_8hpp.html#a1">operator==</a>(<font class="keyword">const</font> <a class="code" href="classArenaAllocator.html">ArenaAllocator<ObjectType, ArenaBlockType></a>&) <font class="keyword">const</font>; |
| 00225 }; |
| 00226 |
| 00227 |
| 00228 |
| 00229 XALAN_CPP_NAMESPACE_END |
| 00230 |
| 00231 |
| 00232 |
| 00233 <font class="preprocessor">#endif // !defined(ARENAALLOCATOR_INCLUDE_GUARD_1357924680)</font> |
| </font></pre></div><p align="center"><a href="diagramnotes.html">Interpreting class diagrams</a></p>
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