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<a href="xchaff__dbase_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* =========FOR INTERNAL USE ONLY. NO DISTRIBUTION PLEASE ========== */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">/*********************************************************************</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright 2000-2001, Princeton University. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> By using this software the USER indicates that he or she has read,</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> understood and will comply with the following:</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> --- Princeton University hereby grants USER nonexclusive permission</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> to use, copy and/or modify this software for internal, noncommercial,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> research purposes only. Any distribution, including commercial sale</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> or license, of this software, copies of the software, its associated</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> documentation and/or modifications of either is strictly prohibited</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> without the prior consent of Princeton University. Title to copyright</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> to this software and its associated documentation shall at all times</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> remain with Princeton University. Appropriate copyright notice shall</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> be placed on all software copies, and a complete copy of this notice</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> shall be included in all copies of the associated documentation.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> No right is granted to use in advertising, publicity or otherwise</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> any trademark, service mark, or the name of Princeton University.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> --- This software and any associated documentation is provided "as is"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> PRINCETON UNIVERSITY MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> OR IMPLIED, INCLUDING THOSE OF MERCHANTABILITY OR FITNESS FOR A</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> PARTICULAR PURPOSE, OR THAT USE OF THE SOFTWARE, MODIFICATIONS, OR</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> ASSOCIATED DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS,</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> TRADEMARKS OR OTHER INTELLECTUAL PROPERTY RIGHTS OF A THIRD PARTY.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> Princeton University shall not be liable under any circumstances for</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> any direct, indirect, special, incidental, or consequential damages</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> with respect to any claim by USER or any third party on account of</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> or arising from the use, or inability to use, this software or its</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> associated documentation, even if Princeton University has been advised</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> of the possibility of those damages.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">*********************************************************************/</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include "<a class="code" href="xchaff__utils_8h.html">xchaff_utils.h</a>"</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "<a class="code" href="xchaff__dbase_8h.html">xchaff_dbase.h</a>"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classCDatabase.html#a3959a40851f6fcb985542d1d43ff75dc"> 41</a></span> <a class="code" href="classCDatabase.html#a3959a40851f6fcb985542d1d43ff75dc">CDatabase::CDatabase</a>() : _variables(1)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a5bb3efabbedc5d63b78084c42b705846">mem_used_up_counts</a> = 0;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ab317cc5ad2da6a68cdec37e71fd80f4f">mem_used_up</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a7dcec2874be271fdfcf7c7f735a65f89">init_num_clauses</a> = 0;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a0823584d04f40c7a47e0b54fe3ccec71">init_num_literals</a> = 0;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a2350a97ea7c7333870732c83772fb1f9">num_added_clauses</a> = 0;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ad7baf06bf924ed8d6d9b9f73d734ef74">num_added_literals</a> = 0;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#a04f908144a2e96ebcec3432be9d811e4">num_deleted_clauses</a> = 0;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ae312d9b4f60acc3df8292394d8bac743">num_deleted_literals</a> = 0;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a> = <span class="keyword">new</span> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>[<a class="code" href="xchaff__dbase_8h.html#a093b08011b38f7046d26007d652f0d84">STARTUP_LIT_POOL_SIZE</a>];</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> = <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a> = <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a> + <a class="code" href="xchaff__dbase_8h.html#a093b08011b38f7046d26007d652f0d84">STARTUP_LIT_POOL_SIZE</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classCDatabase.html#a7fa3358fa63aa02cae8055c0dfe832b7">lit_pool_push_back</a>(0); <span class="comment">//set the first element as a spacing element</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">_mem_limit</a> = 1024*1024*512; <span class="comment">//that's 0.5 G</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classCDatabase.html#a81a2e3d63658a6aa21bda0b8660ee15f"> 62</a></span> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a81a2e3d63658a6aa21bda0b8660ee15f">CDatabase::compact_lit_pool</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a>(cout << <span class="stringliteral">"Begin Compaction "</span> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> new_index = 1;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=1; i< <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>(); ++i){ <span class="comment">//begin with 1 because 0 position is always 0</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>()<=0 && <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i-1).<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>()<=0)</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(new_index) = <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  ++new_index;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> = <a class="code" href="classCDatabase.html#a2e6aeb6e495ae18667311b79982a5e6d">lit_pool_begin</a>() + new_index;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">//update all the pointers of the clauses;</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">//1. clean up the pt pointers from variables</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=1; i<<a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size(); ++i) {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(i).<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(0).clear();</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(i).<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(1).clear();</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">//2. reinsert the ht_pointers</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=1; i< <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>(); ++i) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>() > 0 && <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#aeaa93c7cfdbbe94aed9b9b6f07458a00">is_ht</a>()) {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">int</span> var_idx = <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#a98d4a07830b749d83c74943efdf9669b">var_index</a>();</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">int</span> sign = <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#add6c6301567da71e72923b3c372081cd">var_sign</a>();</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(var_idx).<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(sign).push_back(& <a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i));</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">//3. update the clauses' first literal pointer</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=1; i< <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>(); ++i) {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>() <= 0) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">int</span> cls_idx = -<a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i).<a class="code" href="classCLitPoolElement.html#a253daa80c6f47528feb0b69e1a5c4623">val</a>();</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(cls_idx).<a class="code" href="classCClause.html#a08b669c2f239c65df9cae46603cab85f">first_lit</a>() = &<a class="code" href="classCDatabase.html#a338b044147d1e34dfbed7cc8663725ae">lit_pool</a>(i) - <a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(cls_idx).<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>();</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a>(<a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7">output_lit_pool_state</a>();</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  cout << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="classCDatabase.html#ae121408a92221766e9139e7cf40ab7de"> 100</a></span> <span class="keywordtype">bool</span> <a class="code" href="classCDatabase.html#ae121408a92221766e9139e7cf40ab7de">CDatabase::enlarge_lit_pool</a>(<span class="keywordtype">void</span>) <span class="comment">//will return true if successful, otherwise false.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a> (<a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7">output_lit_pool_state</a>());</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() - <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>() > <a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>() * 2) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">//memory fragmented. ratio of efficiency < 0.5</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">//minus num_clauses() is because of spacing for</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">//each clause in lit_pool</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <a class="code" href="classCDatabase.html#a81a2e3d63658a6aa21bda0b8660ee15f">compact_lit_pool</a>();</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a>(cout << <span class="stringliteral">"Begin Enlarge Lit Pool"</span> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">//otherwise we have to enlarge it.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">//first, check if memory is running out</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">int</span> current_mem = <a class="code" href="classCDatabase.html#a358ccda3851e0469ef0f2a6f3cf55726">estimate_mem_usage</a>();</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">float</span> grow_ratio;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (current_mem < <a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">_mem_limit</a> /2 ) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  grow_ratio = 2;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (current_mem < <a class="code" href="classCDatabase.html#a5f8cf11f16f22e1ffd47a8d0146a584f">_mem_limit</a> * 0.8) {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  grow_ratio = 1.2;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classCDatabase.html#abb17b94a5d63adc740acbe28adb537dd">_stats</a>.<a class="code" href="structCDatabaseStats.html#ab317cc5ad2da6a68cdec37e71fd80f4f">mem_used_up</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() - <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>() > <a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>() * 1.1) {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="classCDatabase.html#a81a2e3d63658a6aa21bda0b8660ee15f">compact_lit_pool</a>();</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">//second, make room for new lit pool.</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * old_start = <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * old_finish = <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a>;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordtype">int</span> old_size = <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a> - <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordtype">int</span> new_size = (int)(old_size * grow_ratio);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  _lit_pool_start = <span class="keyword">new</span> <a class="code" href="classCLitPoolElement.html">CLitPoolElement</a>[new_size];</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> = <a class="code" href="classCDatabase.html#a9a30273cdd0b1f4814f470950cd90a77">_lit_pool_start</a>;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="classCDatabase.html#a3a4e4403ef1f9cb15c219bfe52b1d935">_lit_pool_end_storage</a> = _lit_pool_start + new_size;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">//copy the old content into new place</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">for</span> (<a class="code" href="classCLitPoolElement.html">CLitPoolElement</a> * ptr = old_start; ptr != old_finish; ++ptr) {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  *<a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> = *ptr;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="classCDatabase.html#a970c8066adfcb3875af1f78f1c4029ff">_lit_pool_finish</a> ++;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">//update all the pointers</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordtype">long</span> displacement = _lit_pool_start - old_start;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i< <a class="code" href="classCDatabase.html#a0c2329a20ee0a2672475933c3edd888e">clauses</a>().size(); ++i)</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(i).<a class="code" href="classCClause.html#accc3ecb433cd7ba00affc3180b0911d4">in_use</a>())</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(i).<a class="code" href="classCClause.html#a08b669c2f239c65df9cae46603cab85f">first_lit</a>() += displacement;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i< <a class="code" href="classCDatabase.html#af4388cf12d2984898332c519b220d67b">variables</a>().size(); ++i) {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <a class="code" href="classCVariable.html">CVariable</a> & v = <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(i);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j=0; j< 2 ; ++j) {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  vector<CLitPoolElement *> & ht_ptr = v.<a class="code" href="classCVariable.html#aef0698f402345545601284fa7682e6f5">ht_ptr</a>(j);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> k=0; k< ht_ptr.size(); ++k) {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  ht_ptr[k] += displacement;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">//free old space</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">delete</span> [] old_start;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a>(<a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7">output_lit_pool_state</a>());</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="xchaff__utils_8h.html#a763ffd798508592c5092ac77daa5a659">CHECK</a>(cout << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7"> 167</a></span> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a0a1c2417b7ef79f11d50add3d49625f7">CDatabase::output_lit_pool_state</a> (<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  cout << <span class="stringliteral">"Lit_Pool Used "</span> << <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() << <span class="stringliteral">" Free "</span> << <a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">lit_pool_free_space</a>()</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  << <span class="stringliteral">" Total "</span> << <a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() + <a class="code" href="classCDatabase.html#ac66c5172be66fa260f8f6d5fd41ca295">lit_pool_free_space</a>()</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  << <span class="stringliteral">" Num. Cl "</span> << <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>() << <span class="stringliteral">" Num. Lit "</span> << <a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>();</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  cout << <span class="stringliteral">" Efficiency "</span> << (float)((<span class="keywordtype">float</span>)<a class="code" href="classCDatabase.html#a93f69dacd75d1cf2d4a006b961f3b7b6">num_literals</a>()) / (<span class="keywordtype">float</span>)((<a class="code" href="classCDatabase.html#ab6e49a71237bf7a6f060f79675bb39e7">lit_pool_size</a>() - <a class="code" href="classCDatabase.html#a1ea198396d083b323c22cd49cc2be36c">num_clauses</a>())) << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"><a class="code" href="classCDatabase.html#a074d5b5a1fa285b8ae0e3c516a06a508"> 176</a></span> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a074d5b5a1fa285b8ae0e3c516a06a508">CDatabase::detail_dump_cl</a>(<a class="code" href="xchaff__base_8h.html#a10b9683e115e9c10c0874794507db545">ClauseIdx</a> cl_idx, ostream & os) {</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  os << <span class="stringliteral">"Clause : "</span> << cl_idx;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <a class="code" href="classCClause.html">CClause</a> & cl = <a class="code" href="classCDatabase.html#a5af3586dfcd579ab14d37c6b6cf75e18">clause</a>(cl_idx);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (!cl.<a class="code" href="classCClause.html#accc3ecb433cd7ba00affc3180b0911d4">in_use</a>())</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  os << <span class="stringliteral">"\t\t\t======removed====="</span>;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> * value;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordtype">int</span> i, sz;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  sz = cl.<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>();</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (cl.<a class="code" href="classCClause.html#ae4f9f5a951b75aab530b5b05a3232082">num_lits</a>() < 0) {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  os << <span class="stringliteral">">> "</span> ;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  sz = -sz;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">for</span> (i=0; i<sz; ++i) {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#ab0c8f1826cf8c92fc01943ab62d223df">literal_value</a>(cl.<a class="code" href="classCClause.html#a8254175660df4f73f485f9227becaf14">literals</a>()[i])==0) value = <span class="stringliteral">"0"</span>;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classCDatabase.html#ab0c8f1826cf8c92fc01943ab62d223df">literal_value</a>(cl.<a class="code" href="classCClause.html#a8254175660df4f73f485f9227becaf14">literals</a>()[i])==1) value = <span class="stringliteral">"1"</span>;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">else</span> value = <span class="stringliteral">"X"</span>;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  os << cl.<a class="code" href="classCClause.html#a8254175660df4f73f485f9227becaf14">literals</a>()[i] << <span class="stringliteral">"("</span> << value << <span class="stringliteral">"@"</span> << <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(cl.<a class="code" href="classCClause.html#aa9e91f96e80b94da2b28e3ab381b9acc">literal</a>(i).<a class="code" href="classCLitPoolElement.html#a98d4a07830b749d83c74943efdf9669b">var_index</a>()).dlevel()<< <span class="stringliteral">") "</span>;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  }</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  os << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="code" href="classCDatabase.html#a4ecc7a06a141221adf3aff50d3ac6cf6"> 197</a></span> <span class="keywordtype">void</span> <a class="code" href="classCDatabase.html#a4ecc7a06a141221adf3aff50d3ac6cf6">CDatabase::dump</a>(ostream & os) {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  os << <span class="stringliteral">"Dump Database: "</span> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> i=0; i<<a class="code" href="classCDatabase.html#a6adefe9983a5487fca8fc26cf8d9573f">_clauses</a>.size(); ++i)</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <a class="code" href="classCDatabase.html#a074d5b5a1fa285b8ae0e3c516a06a508">detail_dump_cl</a>(i);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">// os << "Cl: " << i << " " << clause(i) << endl;</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> i=1; i<<a class="code" href="classCDatabase.html#a0bc13af9359ede872eefe8e1f44b3069">_variables</a>.size(); ++i)</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  os << <span class="stringliteral">"VID: "</span> << i << <span class="stringliteral">"\t"</span> << <a class="code" href="classCDatabase.html#af421024d0ade14743332069684aba162">variable</a>(i);</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> }</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
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