1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the program and library */ 4 /* SCIP --- Solving Constraint Integer Programs */ 5 /* */ 6 /* Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB) */ 7 /* */ 8 /* Licensed under the Apache License, Version 2.0 (the "License"); */ 9 /* you may not use this file except in compliance with the License. */ 10 /* You may obtain a copy of the License at */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 20 /* You should have received a copy of the Apache-2.0 license */ 21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */ 22 /* */ 23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 24 25 /**@file struct_pricer.h 26 * @ingroup INTERNALAPI 27 * @brief data structures for variable pricers 28 * @author Tobias Achterberg 29 */ 30 31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 32 33 #ifndef __SCIP_STRUCT_PRICER_H__ 34 #define __SCIP_STRUCT_PRICER_H__ 35 36 37 #include "scip/def.h" 38 #include "scip/type_clock.h" 39 #include "scip/type_pricer.h" 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /** variable pricers data */ 46 struct SCIP_Pricer 47 { 48 char* name; /**< name of variable pricer */ 49 char* desc; /**< description of variable pricer */ 50 SCIP_DECL_PRICERCOPY ((*pricercopy)); /**< copy method of pricer or NULL if you don't want to copy your plugin into sub-SCIPs */ 51 SCIP_DECL_PRICERFREE ((*pricerfree)); /**< destructor of variable pricer */ 52 SCIP_DECL_PRICERINIT ((*pricerinit)); /**< initialize variable pricer */ 53 SCIP_DECL_PRICEREXIT ((*pricerexit)); /**< deinitialize variable pricer */ 54 SCIP_DECL_PRICERINITSOL((*pricerinitsol));/**< solving process initialization method of variable pricer */ 55 SCIP_DECL_PRICEREXITSOL((*pricerexitsol));/**< solving process deinitialization method of variable pricer */ 56 SCIP_DECL_PRICERREDCOST((*pricerredcost));/**< reduced cost pricing method of variable pricer for feasible LPs */ 57 SCIP_DECL_PRICERFARKAS((*pricerfarkas)); /**< Farkas pricing method of variable pricer for infeasible LPs */ 58 SCIP_PRICERDATA* pricerdata; /**< variable pricers local data */ 59 SCIP_CLOCK* setuptime; /**< time spend for setting up this pricer for the next stages */ 60 SCIP_CLOCK* pricerclock; /**< pricer execution time */ 61 int priority; /**< priority of the variable pricer */ 62 int ncalls; /**< number of times, this pricer was called */ 63 int nvarsfound; /**< number of variables priced in found so far by this pricer */ 64 SCIP_Bool delay; /**< should the pricer be delayed until no other pricers or already existing 65 * problem variables with negative reduced costs are found */ 66 SCIP_Bool active; /**< is variable pricer in use for the current problem? */ 67 SCIP_Bool initialized; /**< is variable pricer initialized? */ 68 }; 69 70 #ifdef __cplusplus 71 } 72 #endif 73 74 #endif 75