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<div class="title">xchaff_dbase.h</div> </div>
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<a href="xchaff__dbase_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* =========FOR INTERNAL USE ONLY. NO DISTRIBUTION PLEASE ========== */</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">/*********************************************************************</span>
<a name="l00004"></a>00004 <span class="comment"> Copyright 2000-2001, Princeton University. All rights reserved. </span>
<a name="l00005"></a>00005 <span class="comment"> By using this software the USER indicates that he or she has read, </span>
<a name="l00006"></a>00006 <span class="comment"> understood and will comply with the following:</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment"> --- Princeton University hereby grants USER nonexclusive permission </span>
<a name="l00009"></a>00009 <span class="comment"> to use, copy and/or modify this software for internal, noncommercial,</span>
<a name="l00010"></a>00010 <span class="comment"> research purposes only. Any distribution, including commercial sale </span>
<a name="l00011"></a>00011 <span class="comment"> or license, of this software, copies of the software, its associated </span>
<a name="l00012"></a>00012 <span class="comment"> documentation and/or modifications of either is strictly prohibited </span>
<a name="l00013"></a>00013 <span class="comment"> without the prior consent of Princeton University. Title to copyright</span>
<a name="l00014"></a>00014 <span class="comment"> to this software and its associated documentation shall at all times </span>
<a name="l00015"></a>00015 <span class="comment"> remain with Princeton University. Appropriate copyright notice shall </span>
<a name="l00016"></a>00016 <span class="comment"> be placed on all software copies, and a complete copy of this notice </span>
<a name="l00017"></a>00017 <span class="comment"> shall be included in all copies of the associated documentation. </span>
<a name="l00018"></a>00018 <span class="comment"> No right is granted to use in advertising, publicity or otherwise </span>
<a name="l00019"></a>00019 <span class="comment"> any trademark, service mark, or the name of Princeton University. </span>
<a name="l00020"></a>00020 <span class="comment"></span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment"> --- This software and any associated documentation is provided "as is" </span>
<a name="l00023"></a>00023 <span class="comment"></span>
<a name="l00024"></a>00024 <span class="comment"> PRINCETON UNIVERSITY MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS </span>
<a name="l00025"></a>00025 <span class="comment"> OR IMPLIED, INCLUDING THOSE OF MERCHANTABILITY OR FITNESS FOR A </span>
<a name="l00026"></a>00026 <span class="comment"> PARTICULAR PURPOSE, OR THAT USE OF THE SOFTWARE, MODIFICATIONS, OR </span>
<a name="l00027"></a>00027 <span class="comment"> ASSOCIATED DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, </span>
<a name="l00028"></a>00028 <span class="comment"> TRADEMARKS OR OTHER INTELLECTUAL PROPERTY RIGHTS OF A THIRD PARTY. </span>
<a name="l00029"></a>00029 <span class="comment"></span>
<a name="l00030"></a>00030 <span class="comment"> Princeton University shall not be liable under any circumstances for </span>
<a name="l00031"></a>00031 <span class="comment"> any direct, indirect, special, incidental, or consequential damages </span>
<a name="l00032"></a>00032 <span class="comment"> with respect to any claim by USER or any third party on account of </span>
<a name="l00033"></a>00033 <span class="comment"> or arising from the use, or inability to use, this software or its </span>
<a name="l00034"></a>00034 <span class="comment"> associated documentation, even if Princeton University has been advised</span>
<a name="l00035"></a>00035 <span class="comment"> of the possibility of those damages.</span>
<a name="l00036"></a>00036 <span class="comment">*********************************************************************/</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="preprocessor">#ifndef __DATABASE__</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define __DATABASE__</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "<a class="code" href="xchaff__base_8h.html">xchaff_base.h</a>"</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <queue></span>
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="xchaff__dbase_8h.html#a093b08011b38f7046d26007d652f0d84">00045</a> <span class="preprocessor">#define STARTUP_LIT_POOL_SIZE 0x1000</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span>
<a name="l00047"></a><a class="code" href="structpair__int__equal.html">00047</a> <span class="keyword">struct </span><a class="code" href="structpair__int__equal.html">pair_int_equal</a> {
<a name="l00048"></a><a class="code" href="structpair__int__equal.html#aa9112ceae2ac84a74090033816f1a01e">00048</a> <span class="keywordtype">bool</span> <a class="code" href="structpair__int__equal.html#aa9112ceae2ac84a74090033816f1a01e">operator () </a>(pair<int,int> a, pair<int,int> b) {
<a name="l00049"></a>00049 <span class="keywordflow">return</span> (a.first==b.first && a.second == b.second);
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 };
<a name="l00052"></a>00052
<a name="l00053"></a><a class="code" href="structpair__int__hash__fun.html">00053</a> <span class="keyword">struct </span><a class="code" href="structpair__int__hash__fun.html">pair_int_hash_fun</a> {
<a name="l00054"></a><a class="code" href="structpair__int__hash__fun.html#a20b2374a2f83d7f647d14bac144d2e28">00054</a> <span class="keywordtype">size_t</span> <a class="code" href="structpair__int__hash__fun.html#a20b2374a2f83d7f647d14bac144d2e28">operator () </a>(<span class="keyword">const</span> pair<int, int> a)<span class="keyword"> const </span>{
<a name="l00055"></a>00055 <span class="keywordflow">return</span> (a.first + (a.second << 16));
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 };
<a name="l00058"></a>00058 <span class="comment"></span>
<a name="l00059"></a>00059 <span class="comment">/**Struct**********************************************************************</span>
<a name="l00060"></a>00060 <span class="comment"></span>
<a name="l00061"></a>00061 <span class="comment"> Synopsis [Definition of the statistics of clause database]</span>
<a name="l00062"></a>00062 <span class="comment"></span>
<a name="l00063"></a>00063 <span class="comment"> Description []</span>
<a name="l00064"></a>00064 <span class="comment"></span>
<a name="l00065"></a>00065 <span class="comment"> SeeAlso [CDatabase]</span>
<a name="l00066"></a>00066 <span class="comment"></span>
<a name="l00067"></a>00067 <span class="comment">******************************************************************************/</span>
<a name="l00068"></a>00068
<a name="l00069"></a><a class="code" href="structCDatabaseStats.html">00069</a> <span class="keyword">struct </span><a class="code" href="structCDatabaseStats.html">CDatabaseStats</a> {
<a name="l00070"></a><a class="code" href="structCDatabaseStats.html#a5bb3efabbedc5d63b78084c42b705846">00070</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#a5bb3efabbedc5d63b78084c42b705846">mem_used_up_counts</a>;
<a name="l00071"></a><a class="code" href="structCDatabaseStats.html#ab317cc5ad2da6a68cdec37e71fd80f4f">00071</a> <span class="keywordtype">bool</span> <a class="code" href="structCDatabaseStats.html#ab317cc5ad2da6a68cdec37e71fd80f4f">mem_used_up</a>;
<a name="l00072"></a><a class="code" href="structCDatabaseStats.html#a7dcec2874be271fdfcf7c7f735a65f89">00072</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#a7dcec2874be271fdfcf7c7f735a65f89">init_num_clauses</a>;
<a name="l00073"></a><a class="code" href="structCDatabaseStats.html#a0823584d04f40c7a47e0b54fe3ccec71">00073</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#a0823584d04f40c7a47e0b54fe3ccec71">init_num_literals</a>;
<a name="l00074"></a><a class="code" href="structCDatabaseStats.html#a2350a97ea7c7333870732c83772fb1f9">00074</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#a2350a97ea7c7333870732c83772fb1f9">num_added_clauses</a>;
<a name="l00075"></a><a class="code" href="structCDatabaseStats.html#ad7baf06bf924ed8d6d9b9f73d734ef74">00075</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#ad7baf06bf924ed8d6d9b9f73d734ef74">num_added_literals</a>;
<a name="l00076"></a><a class="code" href="structCDatabaseStats.html#a04f908144a2e96ebcec3432be9d811e4">00076</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#a04f908144a2e96ebcec3432be9d811e4">num_deleted_clauses</a>;
<a name="l00077"></a><a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">00077</a> <span class="keywordtype">int</span> <a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">num_deleted_literals</a>;
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079 <span class="comment"></span>
<a name="l00080"></a>00080 <span class="comment">/**Class**********************************************************************</span>
<a name="l00081"></a>00081 <span class="comment"></span>
<a name="l00082"></a>00082 <span class="comment"> Synopsis [Definition of clause database ]</span>
<a name="l00083"></a>00083 <span class="comment"></span>
<a name="l00084"></a>00084 <span class="comment"> Description [Clause Database is the place where the information of the </span>
<a name="l00085"></a>00085 <span class="comment"> SAT problem are stored. it is a parent class of CSolver ]</span>
<a name="l00086"></a>00086 <span class="comment"></span>
<a name="l00087"></a>00087 <span class="comment"> SeeAlso [CSolver]</span>
<a name="l00088"></a>00088 <span class="comment"></span>
<a name="l00089"></a>00089 <span class="comment">******************************************************************************/</span>
<a name="l00090"></a><a class="code" href="classCDatabase.html">00090</a> <span class="keyword">class </span><a class="code" href="classCDatabase.html">CDatabase</a>
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="keyword">protected</span>:
<a name="l00093"></a><a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">00093</a> <a class="code" href="structCDatabaseStats.html">CDatabaseStats</a> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>;
<a name="l00094"></a>00094 <span class="comment">//for efficiency, the memeory management of lit pool is done by the solver</span>
<a name="l00095"></a>00095
<a name="l00096"></a><a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">00096</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>; <span class="comment">//the begin of the lit vector</span>
<a name="l00097"></a><a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">00097</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>; <span class="comment">//the tail of the used lit vector</span>
<a name="l00098"></a><a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">00098</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a>; <span class="comment">//the storage end of lit vector</span>
<a name="l00099"></a>00099
<a name="l00100"></a><a class="code" href="classCDatabase.html#a0bc13af9359ede872eefe8e1f44b3069">00100</a> vector<CVariable> <a class="code" href="classCDatabase.html#a0bc13af9359ede872eefe8e1f44b3069">_variables</a>; <span class="comment">//note: first element is not used</span>
<a name="l00101"></a><a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">00101</a> vector<CClause> <a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">_clauses</a>;
<a name="l00102"></a><a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">00102</a> queue<ClauseIdx> <a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">_unused_clause_idx_queue</a>;
<a name="l00103"></a>00103
<a name="l00104"></a><a class="code" href="classCDatabase.html#aa53ab545bfb59adcee894879520ee612">00104</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#aa53ab545bfb59adcee894879520ee612">_num_var_in_new_cl</a>;
<a name="l00105"></a><a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">00105</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">_mem_limit</a>;
<a name="l00106"></a>00106 <span class="keyword">public</span>:
<a name="l00107"></a>00107 <span class="comment">//constructors & destructors</span>
<a name="l00108"></a>00108 <a class="code" href="classCDatabase.html#a3959a40851f6fcb985542d1d43ff75dc">CDatabase</a>() ;
<a name="l00109"></a><a class="code" href="classCDatabase.html#a9a3adb67c04d4f1432556aab4149841e">00109</a> <a class="code" href="classCDatabase.html#a9a3adb67c04d4f1432556aab4149841e">~CDatabase</a>() {
<a name="l00110"></a>00110 <span class="keyword">delete</span> [] <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;
<a name="l00111"></a>00111 }
<a name="l00112"></a><a class="code" href="classCDatabase.html#a8bac062c6bcaf5e92160fd0eff63bcd2">00112</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a8bac062c6bcaf5e92160fd0eff63bcd2">init</a>(<span class="keywordtype">void</span>) {
<a name="l00113"></a>00113 <a class="code" href="classCDatabase.html#a25c0a024183a09bf973942b1e4865501">init_num_clauses</a>() = <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>();
<a name="l00114"></a>00114 <a class="code" href="classCDatabase.html#ac4f22334ba90a99dc686757f484a9651">init_num_literals</a>() = <a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>();
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 <span class="comment">//member access function</span>
<a name="l00117"></a><a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">00117</a> vector<CVariable>& <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>(<span class="keywordtype">void</span>) {
<a name="l00118"></a>00118 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a0bc13af9359ede872eefe8e1f44b3069">_variables</a>;
<a name="l00119"></a>00119 }
<a name="l00120"></a><a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">00120</a> vector<CClause>& <a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">clauses</a>(<span class="keywordtype">void</span>) {
<a name="l00121"></a>00121 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">_clauses</a>;
<a name="l00122"></a>00122 }
<a name="l00123"></a><a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">00123</a> <a class="code" href="classCVariable.html">CVariable</a> & <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(<span class="keywordtype">int</span> idx) {
<a name="l00124"></a>00124 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a0bc13af9359ede872eefe8e1f44b3069">_variables</a>[idx];
<a name="l00125"></a>00125 }
<a name="l00126"></a><a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">00126</a> <a class="code" href="classCClause.html">CClause</a> & <a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> idx) {
<a name="l00127"></a>00127 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">_clauses</a>[idx];
<a name="l00128"></a>00128 }
<a name="l00129"></a><a class="code" href="classCDatabase.html#addf48e1802591c3d505308224d7ceb31">00129</a> <a class="code" href="structCDatabaseStats.html">CDatabaseStats</a> & <a class="code" href="classCDatabase.html#addf48e1802591c3d505308224d7ceb31">stats</a>(<span class="keywordtype">void</span>) {
<a name="l00130"></a>00130 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>;
<a name="l00131"></a>00131 }
<a name="l00132"></a><a class="code" href="classCDatabase.html#adfda0cf04a767a89cc9ac7dbeb7a11ce">00132</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#adfda0cf04a767a89cc9ac7dbeb7a11ce">set_mem_limit</a>(<span class="keywordtype">int</span> n) {
<a name="l00133"></a>00133 <a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">_mem_limit</a> = n;
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 <span class="comment">//some stats</span>
<a name="l00136"></a><a class="code" href="classCDatabase.html#a25c0a024183a09bf973942b1e4865501">00136</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#a25c0a024183a09bf973942b1e4865501">init_num_clauses</a>() { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a7dcec2874be271fdfcf7c7f735a65f89">init_num_clauses</a>; }
<a name="l00137"></a><a class="code" href="classCDatabase.html#ac4f22334ba90a99dc686757f484a9651">00137</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#ac4f22334ba90a99dc686757f484a9651">init_num_literals</a> () { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a0823584d04f40c7a47e0b54fe3ccec71">init_num_literals</a>; }
<a name="l00138"></a><a class="code" href="classCDatabase.html#a7c466015881107beb66f443839fd75e9">00138</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#a7c466015881107beb66f443839fd75e9">num_added_clauses</a> () { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a2350a97ea7c7333870732c83772fb1f9">num_added_clauses</a>; }
<a name="l00139"></a><a class="code" href="classCDatabase.html#a098b913b13aaab438a5f73a4cef09370">00139</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#a098b913b13aaab438a5f73a4cef09370">num_added_literals</a>() { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ad7baf06bf924ed8d6d9b9f73d734ef74">num_added_literals</a>; }
<a name="l00140"></a><a class="code" href="classCDatabase.html#ad386f2990781ab78ebbe6eb83b7c365e">00140</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#ad386f2990781ab78ebbe6eb83b7c365e">num_deleted_clauses</a>() { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a04f908144a2e96ebcec3432be9d811e4">num_deleted_clauses</a>; }
<a name="l00141"></a><a class="code" href="classCDatabase.html#a3e0c56c9059f90ce0b3ba0f94e2aeed2">00141</a> <span class="keywordtype">int</span> & <a class="code" href="classCDatabase.html#a3e0c56c9059f90ce0b3ba0f94e2aeed2">num_deleted_literals</a>() { <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">num_deleted_literals</a>; }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="comment">//lit pool naming convention is following STL Vector</span>
<a name="l00144"></a><a class="code" href="classCDatabase.html#a2e6aeb6e495ae18667311b79982a5e6d">00144</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * <a class="code" href="classCDatabase.html#a2e6aeb6e495ae18667311b79982a5e6d">lit_pool_begin</a>(<span class="keywordtype">void</span>) {
<a name="l00145"></a>00145 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;
<a name="l00146"></a>00146 }
<a name="l00147"></a><a class="code" href="classCDatabase.html#a3217dc6be8cff75fd418fbd4ff2e5763">00147</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * <a class="code" href="classCDatabase.html#a3217dc6be8cff75fd418fbd4ff2e5763">lit_pool_end</a>(<span class="keywordtype">void</span>) {
<a name="l00148"></a>00148 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>;
<a name="l00149"></a>00149 }
<a name="l00150"></a><a class="code" href="classCDatabase.html#a7fa3358fa63aa02cae8055c0dfe832b7">00150</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a7fa3358fa63aa02cae8055c0dfe832b7">lit_pool_push_back</a>(<span class="keywordtype">int</span> value) {
<a name="l00151"></a>00151 assert (<a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> <= <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a> );
<a name="l00152"></a>00152 <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>-><a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>() = value;
<a name="l00153"></a>00153 ++ <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>;
<a name="l00154"></a>00154 }
<a name="l00155"></a><a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">00155</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>(<span class="keywordtype">void</span>) {
<a name="l00156"></a>00156 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> - <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;
<a name="l00157"></a>00157 }
<a name="l00158"></a><a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">00158</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">lit_pool_free_space</a>(<span class="keywordtype">void</span>) {
<a name="l00159"></a>00159 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a> - <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>;
<a name="l00160"></a>00160 }
<a name="l00161"></a><a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">00161</a> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> & <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(<span class="keywordtype">int</span> i) {
<a name="l00162"></a>00162 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>[i];
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164 <span class="comment">//functions on lit_pool</span>
<a name="l00165"></a>00165 <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7">output_lit_pool_state</a>(<span class="keywordtype">void</span>);
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keywordtype">bool</span> <a class="code" href="classCDatabase.html#ae121408a92221766e9139e7cf40ab7de">enlarge_lit_pool</a>(<span class="keywordtype">void</span>);
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a81a2e3d63658a6aa21bda0b8660ee15f">compact_lit_pool</a>(<span class="keywordtype">void</span>);
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="comment">//functions </span>
<a name="l00172"></a><a class="code" href="classCDatabase.html#a358ccda3851e0469ef0f2a6f3cf55726">00172</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a358ccda3851e0469ef0f2a6f3cf55726">estimate_mem_usage</a> (<span class="keywordtype">void</span>)
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a> = <span class="keyword">sizeof</span>(<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>) *
<a name="l00175"></a>00175 (<a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() + <a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">lit_pool_free_space</a>());
<a name="l00176"></a>00176 <span class="keywordtype">int</span> mem_vars = <span class="keyword">sizeof</span>(<a class="code" href="classCVariable.html">CVariable</a>) *
<a name="l00177"></a>00177 <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().capacity();
<a name="l00178"></a>00178 <span class="keywordtype">int</span> mem_cls = <span class="keyword">sizeof</span>(<a class="code" href="classCClause.html">CClause</a>) *
<a name="l00179"></a>00179 <a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">clauses</a>().capacity();
<a name="l00180"></a>00180 <span class="keywordtype">int</span> mem_cls_queue = <span class="keyword">sizeof</span>(int) *
<a name="l00181"></a>00181 <a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">_unused_clause_idx_queue</a>.size();
<a name="l00182"></a>00182 <span class="keywordtype">int</span> mem_ht_ptrs =0, mem_lit_clauses = 0;
<a name="l00183"></a>00183 mem_ht_ptrs = <span class="keyword">sizeof</span>(<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>*) *
<a name="l00184"></a>00184 (<a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">clauses</a>().size()-<a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">_unused_clause_idx_queue</a>.size()) * 2;
<a name="l00185"></a>00185 <span class="keywordflow">return</span> (lit_pool + mem_vars + mem_cls +
<a name="l00186"></a>00186 mem_cls_queue + mem_ht_ptrs + mem_lit_clauses);
<a name="l00187"></a>00187 }
<a name="l00188"></a><a class="code" href="classCDatabase.html#a1758bead04486434d17201a4bc9e6e40">00188</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a1758bead04486434d17201a4bc9e6e40">mem_usage</a>(<span class="keywordtype">void</span>) {
<a name="l00189"></a>00189 <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a> = (<a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() + <a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">lit_pool_free_space</a>()) * <span class="keyword">sizeof</span>(<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>);
<a name="l00190"></a>00190 <span class="keywordtype">int</span> mem_vars = <span class="keyword">sizeof</span>(<a class="code" href="classCVariable.html">CVariable</a>) * <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().capacity();
<a name="l00191"></a>00191 <span class="keywordtype">int</span> mem_cls = <span class="keyword">sizeof</span>(<a class="code" href="classCClause.html">CClause</a>) * <a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">clauses</a>().capacity();
<a name="l00192"></a>00192 <span class="keywordtype">int</span> mem_cls_queue = <span class="keyword">sizeof</span>(int) * <a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">_unused_clause_idx_queue</a>.size();
<a name="l00193"></a>00193 <span class="keywordtype">int</span> mem_ht_ptrs = 0, mem_lit_clauses = 0;
<a name="l00194"></a>00194 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i< <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size(); ++i) {
<a name="l00195"></a>00195 <a class="code" href="classCVariable.html">CVariable</a> & v = <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(i);
<a name="l00196"></a>00196 mem_ht_ptrs += v.<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(0).capacity() + v.<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(1).capacity();
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 mem_ht_ptrs *= <span class="keyword">sizeof</span>(<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>*);
<a name="l00199"></a>00199 mem_lit_clauses *= <span class="keyword">sizeof</span>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a>);
<a name="l00200"></a>00200 <span class="keywordflow">return</span> (lit_pool + mem_vars + mem_cls +
<a name="l00201"></a>00201 mem_cls_queue + mem_ht_ptrs + mem_lit_clauses);
<a name="l00202"></a>00202 }
<a name="l00203"></a><a class="code" href="classCDatabase.html#ae153743ecd52bb30bb757ad8d49c74e9">00203</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#ae153743ecd52bb30bb757ad8d49c74e9">set_variable_number</a>(<span class="keywordtype">int</span> n) {
<a name="l00204"></a>00204 <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().resize(n + 1) ;
<a name="l00205"></a>00205 }
<a name="l00206"></a><a class="code" href="classCDatabase.html#a84d9594576e3c2c13bde2f9d6a98a583">00206</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a84d9594576e3c2c13bde2f9d6a98a583">add_variable</a>(<span class="keywordtype">void</span>) {
<a name="l00207"></a>00207 <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().resize( <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size() + 1);
<a name="l00208"></a>00208 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size() - 1;
<a name="l00209"></a>00209 }
<a name="l00210"></a><a class="code" href="classCDatabase.html#ac95e4d7648334447162c0fb4e3de28d7">00210</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#ac95e4d7648334447162c0fb4e3de28d7">num_variables</a>(<span class="keywordtype">void</span>) {
<a name="l00211"></a>00211 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size() - 1;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00214"></a><a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">00214</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>(<span class="keywordtype">void</span>) {
<a name="l00215"></a>00215 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">_clauses</a>.size() - <a class="code" href="classCDatabase.html#ae238340b46c3fc75854c4c244ae96d28">_unused_clause_idx_queue</a>.size();
<a name="l00216"></a>00216 }
<a name="l00217"></a><a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">00217</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>(<span class="keywordtype">void</span>) {
<a name="l00218"></a>00218 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ad7baf06bf924ed8d6d9b9f73d734ef74">num_added_literals</a> - <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">num_deleted_literals</a>;
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220
<a name="l00221"></a><a class="code" href="classCDatabase.html#a6529c55a489afcd88e37370d6a61ae96">00221</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a6529c55a489afcd88e37370d6a61ae96">mark_clause_deleted</a>(<a class="code" href="classCClause.html">CClause</a> & cl) {
<a name="l00222"></a>00222 ++<a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a04f908144a2e96ebcec3432be9d811e4">num_deleted_clauses</a>;
<a name="l00223"></a>00223 <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">num_deleted_literals</a> += cl.<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>();
<a name="l00224"></a>00224 cl.<a class="code" href="classCClause.html#accc3ecb433cd7ba00affc3180b0911d4">in_use</a>() = <span class="keyword">false</span>;
<a name="l00225"></a>00225 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i< cl.<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>(); ++i) {
<a name="l00226"></a>00226 <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> & l = cl.<a class="code" href="classCClause.html#aa9e91f96e80b94da2b28e3ab381b9acc">literal</a>(i);
<a name="l00227"></a>00227 --<a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(l.<a class="code" href="classCLitPoolElement.html#a98d4a07830b749d83c74943efdf9669b">var_index</a>()).lits_count(l.<a class="code" href="classCLitPoolElement.html#add6c6301567da71e72923b3c372081cd">var_sign</a>());
<a name="l00228"></a>00228 l.<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>() = 0;
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230 }
<a name="l00231"></a><a class="code" href="classCDatabase.html#a8fa67bd6b830c6853b01ed51b5fd183c">00231</a> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a8fa67bd6b830c6853b01ed51b5fd183c">mark_var_in_new_cl</a>(<span class="keywordtype">int</span> v_idx, <span class="keywordtype">int</span> phase ) {
<a name="l00232"></a>00232 <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(v_idx).in_new_cl() == -1 && phase != -1)
<a name="l00233"></a>00233 ++ <a class="code" href="classCDatabase.html#aa53ab545bfb59adcee894879520ee612">_num_var_in_new_cl</a>;
<a name="l00234"></a>00234 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(v_idx).in_new_cl() != -1 && phase == -1)
<a name="l00235"></a>00235 -- <a class="code" href="classCDatabase.html#aa53ab545bfb59adcee894879520ee612">_num_var_in_new_cl</a>;
<a name="l00236"></a>00236 <span class="keywordflow">else</span> assert (0 && <span class="stringliteral">"How can this happen? "</span>);
<a name="l00237"></a>00237 <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(v_idx).<a class="code" href="classCVariable.html#a74c853f04808a514d7c99514a7583e2d">set_in_new_cl</a>( phase );
<a name="l00238"></a>00238 }
<a name="l00239"></a><a class="code" href="classCDatabase.html#ab0c8f1826cf8c92fc01943ab62d223df">00239</a> <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#ab0c8f1826cf8c92fc01943ab62d223df">literal_value</a> (<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> l) { <span class="comment">//note: it will return 0 or 1 or other , </span>
<a name="l00240"></a>00240 <span class="comment">//here "other" may not equal UNKNOWN</span>
<a name="l00241"></a>00241 <span class="keywordflow">return</span> <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(l.<a class="code" href="classCLitPoolElement.html#a98d4a07830b749d83c74943efdf9669b">var_index</a>()).value() ^ l.<a class="code" href="classCLitPoolElement.html#add6c6301567da71e72923b3c372081cd">var_sign</a>();
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordtype">int</span> <a class="code" href="classCDatabase.html#a3e469952453c4b10f1040e9a19375f77">find_unit_literal</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> cl); <span class="comment">//if not unit clause, return 0.</span>
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="keywordtype">bool</span> <a class="code" href="classCDatabase.html#aeb01a55c31dfd135d9f19b561829e88d">is_conflict</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> cl); <span class="comment">//e.g. all literals assigned value 0</span>
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordtype">bool</span> <a class="code" href="classCDatabase.html#a85e3fc325b5e311c4081e5ac05e4ac5c">is_satisfied</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> cl); <span class="comment">//e.g. at least one literal has value 1</span>
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a074d5b5a1fa285b8ae0e3c516a06a508">detail_dump_cl</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> cl_idx, ostream & os = cout);
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a4ecc7a06a141221adf3aff50d3ac6cf6">dump</a>(ostream & os = cout);
<a name="l00253"></a>00253 };
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="preprocessor">#endif</span>
<a name="l00256"></a>00256 <span class="preprocessor"></span>
<a name="l00257"></a>00257
<a name="l00258"></a>00258
<a name="l00259"></a>00259
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<a name="l00270"></a>00270
</pre></div></div>
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