Scippy

SCIP

Solving Constraint Integer Programs

struct_event.h
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4 /* SCIP --- Solving Constraint Integer Programs */
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24 
25 /**@file struct_event.h
26  * @ingroup INTERNALAPI
27  * @brief datastructures for managing events
28  * @author Tobias Achterberg
29  */
30 
31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32 
33 #ifndef __SCIP_STRUCT_EVENT_H__
34 #define __SCIP_STRUCT_EVENT_H__
35 
36 
37 #include "scip/def.h"
38 #include "scip/type_clock.h"
39 #include "scip/type_event.h"
40 #include "scip/type_var.h"
41 #include "scip/type_sol.h"
42 #include "scip/type_tree.h"
43 
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47 
48 /** data for variable addition events */
50 {
51  SCIP_VAR* var; /**< variable that was added to the problem */
52 };
53 
54 /** data for variable deletion events */
56 {
57  SCIP_VAR* var; /**< variable that will be deleted from the problem */
58 };
59 
60 /** data for variable fixing events */
62 {
63  SCIP_VAR* var; /**< variable that was fixed */
64 };
65 
66 /** data for locks change events */
68 {
69  SCIP_VAR* var; /**< variable for which the lock numbers were changed */
70 };
71 
72 /** data for objective value change events */
74 {
75  SCIP_Real oldobj; /**< old objective value before value changed */
76  SCIP_Real newobj; /**< new objective value after value changed */
77  SCIP_VAR* var; /**< variable whose objective value changed */
78 };
79 
80 /** data for bound change events */
82 {
83  SCIP_Real oldbound; /**< old bound before bound changed */
84  SCIP_Real newbound; /**< new bound after bound changed */
85  SCIP_VAR* var; /**< variable whose bound changed */
86 };
87 
88 /** data for domain hole events */
90 {
91  SCIP_Real left; /**< left bound of open interval in hole */
92  SCIP_Real right; /**< right bound of open interval in hole */
93  SCIP_VAR* var; /**< variable for which a hole was removed */
94 };
95 
96 /** data for implication added events */
98 {
99  SCIP_VAR* var; /**< variable for which an implication, variable bound, or clique was added */
100 };
101 
102 /** data for variable type change events */
104 {
105  SCIP_VARTYPE oldtype; /**< old variable type */
106  SCIP_VARTYPE newtype; /**< new variable type */
107  SCIP_VAR* var; /**< variable whose type changed */
108 };
109 
110 /** data for row addition to separation storage events */
112 {
113  SCIP_ROW* row; /**< row that was added to separation storage */
114 };
115 
116 /** data for row deletion from separation storage events */
118 {
119  SCIP_ROW* row; /**< row that was deleted from separation storage */
120 };
121 
122 /** data for row addition to LP events */
124 {
125  SCIP_ROW* row; /**< row that was added to the LP */
126 };
127 
128 /** data for row deletion from LP events */
130 {
131  SCIP_ROW* row; /**< row that was deleted from the LP */
132 };
133 
134 /** data for row coefficient change events */
136 {
137  SCIP_ROW* row; /**< row which coefficient has changed */
138  SCIP_COL* col; /**< column which coefficient has changed */
139  SCIP_Real oldval; /**< old value of coefficient */
140  SCIP_Real newval; /**< new value of coefficient */
141 };
142 
143 /** data for row constant change events */
145 {
146  SCIP_ROW* row; /**< row which constant has changed */
147  SCIP_Real oldval; /**< old value of constant */
148  SCIP_Real newval; /**< new value of constant */
149 };
150 
151 /** data for row side change events */
153 {
154  SCIP_ROW* row; /**< row which side has changed */
155  SCIP_SIDETYPE side; /**< which side has changed */
156  SCIP_Real oldval; /**< old value of side */
157  SCIP_Real newval; /**< new value of side */
158 };
159 
160 /** event data structure */
162 {
163  union
164  {
165  SCIP_EVENTVARADDED eventvaradded; /**< data for variable addition events */
166  SCIP_EVENTVARDELETED eventvardeleted; /**< data for variable deletion events */
167  SCIP_EVENTVARFIXED eventvarfixed; /**< data for variable fixing events */
168  SCIP_EVENTVARUNLOCKED eventvarunlocked; /**< data for locks change events */
169  SCIP_EVENTOBJCHG eventobjchg; /**< data for objective value change events */
170  SCIP_EVENTBDCHG eventbdchg; /**< data for bound change events */
171  SCIP_EVENTHOLE eventhole; /**< data for domain hole events */
172  SCIP_EVENTIMPLADD eventimpladd; /**< data for implication added events */
173  SCIP_EVENTTYPECHG eventtypechg; /**< data for variable type change events */
174  SCIP_EVENTROWADDEDSEPA eventrowaddedsepa; /**< data for row addition to separation storage events */
175  SCIP_EVENTROWDELETEDSEPA eventrowdeletedsepa; /**< data for row deletion from separation storage events */
176  SCIP_EVENTROWADDEDLP eventrowaddedlp; /**< data for row addition to LP events */
177  SCIP_EVENTROWDELETEDLP eventrowdeletedlp; /**< data for row deletion from LP events */
178  SCIP_EVENTROWCOEFCHANGED eventrowcoefchanged; /**< data for row coefficient change events */
179  SCIP_EVENTROWCONSTCHANGED eventrowconstchanged; /**< data for row constant change events */
180  SCIP_EVENTROWSIDECHANGED eventrowsidechanged; /**< data for row side change events */
181  SCIP_NODE* node; /**< data for node and LP events */
182  SCIP_SOL* sol; /**< data for primal solution events */
183  } data;
184  SCIP_EVENTTYPE eventtype; /**< type of event */
185 };
186 
187 /** event filter to select events to be processed by an event handler */
189 {
190  SCIP_EVENTTYPE* eventtypes; /**< array with types of event to process; 0 marks a deleted event catch entry */
191  SCIP_EVENTHDLR** eventhdlrs; /**< array with event handlers to process the event */
192  SCIP_EVENTDATA** eventdata; /**< array with user data for the issued event */
193  int* nextpos; /**< linked lists for free, delayed added and delayed deleted slot positions */
194  int size; /**< size of filter arrays (available slots in arrays) */
195  int len; /**< number entries in filter arrays (used and deleted) */
196  int firstfreepos; /**< first deleted slot; remaining slots are in poslist */
197  int firstdeletedpos; /**< first delayed deleted slot; remaining slots are in poslist */
198  SCIP_EVENTTYPE eventmask; /**< mask for events that are handled by any event handler in the filter */
199  SCIP_EVENTTYPE delayedeventmask; /**< mask for delayed added events */
200  SCIP_Bool delayupdates; /**< should additions and deletions to the filter be delayed? */
201 };
202 
203 /** event handler */
205 {
206  char* name; /**< name of event handler */
207  char* desc; /**< description of event handler */
208  SCIP_DECL_EVENTCOPY ((*eventcopy)); /**< copy method of event handler or NULL if you don't want to copy your plugin into sub-SCIPs */
209  SCIP_DECL_EVENTFREE ((*eventfree)); /**< destructor of event handler */
210  SCIP_DECL_EVENTINIT ((*eventinit)); /**< initialize event handler */
211  SCIP_DECL_EVENTEXIT ((*eventexit)); /**< deinitialize event handler */
212  SCIP_DECL_EVENTINITSOL((*eventinitsol)); /**< solving process initialization method of event handler */
213  SCIP_DECL_EVENTEXITSOL((*eventexitsol)); /**< solving process deinitialization method of event handler */
214  SCIP_DECL_EVENTDELETE ((*eventdelete)); /**< free specific event data */
215  SCIP_DECL_EVENTEXEC ((*eventexec)); /**< execute event handler */
216  SCIP_EVENTHDLRDATA* eventhdlrdata; /**< event handler data */
217  SCIP_CLOCK* setuptime; /**< time spend for setting up this event handler for the next stages */
218  SCIP_CLOCK* eventtime; /**< time spend in this event handler execution method */
219  SCIP_Bool initialized; /**< is event handler initialized? */
220 };
221 
222 /** event queue to cache events and process them later */
224 {
225  SCIP_EVENT** events; /**< array with queued events */
226  int eventssize; /**< number of available slots in events array */
227  int nevents; /**< number of events in queue (used slots if events array) */
228  SCIP_Bool delayevents; /**< should the events be delayed and processed later? */
229 };
230 
231 #ifdef __cplusplus
232 }
233 #endif
234 
235 #endif
SCIP_EVENTVARUNLOCKED eventvarunlocked
Definition: struct_event.h:168
SCIP_EVENTROWSIDECHANGED eventrowsidechanged
Definition: struct_event.h:180
SCIP_EVENTHDLR ** eventhdlrs
Definition: struct_event.h:191
SCIP_EVENTOBJCHG eventobjchg
Definition: struct_event.h:169
SCIP_VARTYPE newtype
Definition: struct_event.h:106
SCIP_DECL_EVENTEXIT(EventhdlrNewSol::scip_exit)
struct SCIP_EventhdlrData SCIP_EVENTHDLRDATA
Definition: type_event.h:155
SCIP_EVENTROWDELETEDLP eventrowdeletedlp
Definition: struct_event.h:177
SCIP_VAR * var
Definition: struct_event.h:99
SCIP_EVENTROWADDEDSEPA eventrowaddedsepa
Definition: struct_event.h:174
SCIP_Bool delayupdates
Definition: struct_event.h:200
SCIP_DECL_EVENTINITSOL(EventhdlrNewSol::scip_initsol)
SCIP_Real newobj
Definition: struct_event.h:76
SCIP_DECL_EVENTINIT(EventhdlrNewSol::scip_init)
SCIP_Real right
Definition: struct_event.h:92
SCIP_DECL_EVENTFREE(EventhdlrNewSol::scip_free)
SCIP_EVENTTYPECHG eventtypechg
Definition: struct_event.h:173
SCIP_EVENTTYPE eventmask
Definition: struct_event.h:198
SCIP_VARTYPE oldtype
Definition: struct_event.h:105
SCIP_Bool initialized
Definition: struct_event.h:219
struct SCIP_EventData SCIP_EVENTDATA
Definition: type_event.h:173
SCIP_EVENTVARADDED eventvaradded
Definition: struct_event.h:165
SCIP_EVENTTYPE eventtype
Definition: struct_event.h:184
type definitions for problem variables
SCIP_EVENTROWADDEDLP eventrowaddedlp
Definition: struct_event.h:176
SCIP_Real left
Definition: struct_event.h:91
SCIP_EVENTIMPLADD eventimpladd
Definition: struct_event.h:172
type definitions for managing events
SCIP_Real newbound
Definition: struct_event.h:84
SCIP_VAR * var
Definition: struct_event.h:85
#define SCIP_Bool
Definition: def.h:91
SCIP_EVENTHDLRDATA * eventhdlrdata
Definition: struct_event.h:216
SCIP_Real oldobj
Definition: struct_event.h:75
SCIP_EVENT ** events
Definition: struct_event.h:225
type definitions for branch and bound tree
SCIP_Bool delayevents
Definition: struct_event.h:228
type definitions for clocks and timing issues
type definitions for storing primal CIP solutions
SCIP_EVENTDATA ** eventdata
Definition: struct_event.h:192
SCIP_EVENTBDCHG eventbdchg
Definition: struct_event.h:170
SCIP_EVENTROWCOEFCHANGED eventrowcoefchanged
Definition: struct_event.h:178
SCIP_VAR * var
Definition: struct_event.h:77
SCIP_EVENTHOLE eventhole
Definition: struct_event.h:171
SCIP_NODE * node
Definition: struct_event.h:181
SCIP_VAR * var
Definition: struct_event.h:93
SCIP_Real oldbound
Definition: struct_event.h:83
SCIP_DECL_EVENTEXEC(EventhdlrNewSol::scip_exec)
#define SCIP_Real
Definition: def.h:173
SCIP_DECL_EVENTEXITSOL(EventhdlrNewSol::scip_exitsol)
#define SCIP_DECL_EVENTCOPY(x)
Definition: type_event.h:183
SCIP_CLOCK * eventtime
Definition: struct_event.h:218
SCIP_CLOCK * setuptime
Definition: struct_event.h:217
SCIP_EVENTTYPE delayedeventmask
Definition: struct_event.h:199
SCIP_EVENTTYPE * eventtypes
Definition: struct_event.h:190
SCIP_EVENTVARDELETED eventvardeleted
Definition: struct_event.h:166
SCIP_EVENTVARFIXED eventvarfixed
Definition: struct_event.h:167
enum SCIP_Vartype SCIP_VARTYPE
Definition: type_var.h:73
SCIP_DECL_EVENTDELETE(EventhdlrNewSol::scip_delete)
common defines and data types used in all packages of SCIP
SCIP_SOL * sol
Definition: struct_event.h:182
SCIP_EVENTROWDELETEDSEPA eventrowdeletedsepa
Definition: struct_event.h:175
SCIP_EVENTROWCONSTCHANGED eventrowconstchanged
Definition: struct_event.h:179
uint64_t SCIP_EVENTTYPE
Definition: type_event.h:151
enum SCIP_SideType SCIP_SIDETYPE
Definition: type_lp.h:67