1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* */
/* This file is part of the program and library */
/* SCIP --- Solving Constraint Integer Programs */
/* */
/* Copyright 2002-2022 Zuse Institute Berlin */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* */
/* You should have received a copy of the Apache-2.0 license */
/* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
/* */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/**@file struct_pricer.h
* @ingroup INTERNALAPI
* @brief data structures for variable pricers
* @author Tobias Achterberg
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_STRUCT_PRICER_H__
#define __SCIP_STRUCT_PRICER_H__
#include "scip/def.h"
#include "scip/type_clock.h"
#include "scip/type_pricer.h"
#ifdef __cplusplus
extern "C" {
#endif
/** variable pricers data */
struct SCIP_Pricer
{
char* name; /**< name of variable pricer */
char* desc; /**< description of variable pricer */
SCIP_DECL_PRICERCOPY ((*pricercopy)); /**< copy method of pricer or NULL if you don't want to copy your plugin into sub-SCIPs */
SCIP_DECL_PRICERFREE ((*pricerfree)); /**< destructor of variable pricer */
SCIP_DECL_PRICERINIT ((*pricerinit)); /**< initialize variable pricer */
SCIP_DECL_PRICEREXIT ((*pricerexit)); /**< deinitialize variable pricer */
SCIP_DECL_PRICERINITSOL((*pricerinitsol));/**< solving process initialization method of variable pricer */
SCIP_DECL_PRICEREXITSOL((*pricerexitsol));/**< solving process deinitialization method of variable pricer */
SCIP_DECL_PRICERREDCOST((*pricerredcost));/**< reduced cost pricing method of variable pricer for feasible LPs */
SCIP_DECL_PRICERFARKAS((*pricerfarkas)); /**< Farkas pricing method of variable pricer for infeasible LPs */
SCIP_PRICERDATA* pricerdata; /**< variable pricers local data */
SCIP_CLOCK* setuptime; /**< time spend for setting up this pricer for the next stages */
SCIP_CLOCK* pricerclock; /**< pricer execution time */
int priority; /**< priority of the variable pricer */
int ncalls; /**< number of times, this pricer was called */
int nvarsfound; /**< number of variables priced in found so far by this pricer */
SCIP_Bool delay; /**< should the pricer be delayed until no other pricers or already existing
* problem variables with negative reduced costs are found */
SCIP_Bool active; /**< is variable pricer in use for the current problem? */
SCIP_Bool initialized; /**< is variable pricer initialized? */
};
#ifdef __cplusplus
}
#endif
#endif