worker.hh
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2004 00008 * 00009 * Last modified: 00010 * $Date: 2013-10-30 15:42:34 +0100 (Wed, 30 Oct 2013) $ by $Author: schulte $ 00011 * $Revision: 14037 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 #ifndef __GECODE_SEARCH_WORKER_HH__ 00039 #define __GECODE_SEARCH_WORKER_HH__ 00040 00041 #include <gecode/search.hh> 00042 00043 namespace Gecode { namespace Search { 00044 00048 class Worker : public Statistics { 00049 protected: 00051 bool _stopped; 00053 unsigned long int root_depth; 00054 public: 00056 Worker(void); 00058 void start(void); 00060 bool stop(const Options& o); 00062 bool stopped(void) const; 00064 void reset(unsigned long int d=0); 00066 void stack_depth(unsigned long int d); 00068 unsigned long int steal_depth(unsigned long int d) const; 00069 }; 00070 00071 00072 00073 forceinline 00074 Worker::Worker(void) 00075 : _stopped(false), root_depth(0) {} 00076 00077 forceinline void 00078 Worker::start(void) { 00079 _stopped = false; 00080 } 00081 00082 forceinline bool 00083 Worker::stop(const Options& o) { 00084 if (o.stop == NULL) 00085 return false; 00086 _stopped |= o.stop->stop(*this,o); 00087 return _stopped; 00088 } 00089 00090 forceinline bool 00091 Worker::stopped(void) const { 00092 return _stopped; 00093 } 00094 00095 forceinline void 00096 Worker::reset(unsigned long int d) { 00097 Statistics::reset(); 00098 root_depth = d; 00099 if (depth < d) 00100 depth = d; 00101 } 00102 00103 forceinline void 00104 Worker::stack_depth(unsigned long int d) { 00105 if (depth < root_depth + d) 00106 depth = root_depth + d; 00107 } 00108 00109 forceinline unsigned long int 00110 Worker::steal_depth(unsigned long int d) const { 00111 return root_depth + d; 00112 } 00113 00114 }} 00115 00116 #endif 00117 00118 // STATISTICS: search-other