Detailed Description

methods for node selectors

Author: Tobias Achterberg; Timo Berthold

Definition in file nodesel.c.

#include <assert.h>
#include <string.h>
#include "scip/def.h"
#include "scip/set.h"
#include "scip/clock.h"
#include "scip/stat.h"
#include "scip/visual.h"
#include "scip/paramset.h"
#include "scip/tree.h"
#include "scip/reopt.h"
#include "scip/lp.h"
#include "scip/scip.h"
#include "scip/nodesel.h"
#include "scip/pub_message.h"
#include "scip/pub_misc.h"
#include "scip/struct_nodesel.h"
#include "scip/struct_scip.h"

Go to the source code of this file.

Macros
#define	PQ_PARENT(q) (((q)+1)/2-1)

#define	PQ_LEFTCHILD(p) (2*(p)+1)

#define	PQ_RIGHTCHILD(p) (2*(p)+2)

Functions
static	SCIP_DECL_SORTPTRCOMP (nodeCompNumber)

static SCIP_RETCODE	nodepqResize (SCIP_NODEPQ nodepq, SCIP_SET set, int minsize)

SCIP_RETCODE	SCIPnodepqCreate (SCIP_NODEPQ *nodepq, SCIP_SET set, SCIP_NODESEL *nodesel)

void	SCIPnodepqDestroy (SCIP_NODEPQ **nodepq)

SCIP_RETCODE	SCIPnodepqFree (SCIP_NODEPQ *nodepq, BMS_BLKMEM blkmem, SCIP_SET set, SCIP_STAT stat, SCIP_EVENTFILTER eventfilter, SCIP_EVENTQUEUE eventqueue, SCIP_TREE tree, SCIP_LP lp)

SCIP_RETCODE	SCIPnodepqClear (SCIP_NODEPQ nodepq, BMS_BLKMEM blkmem, SCIP_SET set, SCIP_STAT stat, SCIP_EVENTFILTER eventfilter, SCIP_EVENTQUEUE eventqueue, SCIP_TREE tree, SCIP_LP lp)

SCIP_NODESEL *	SCIPnodepqGetNodesel (SCIP_NODEPQ *nodepq)

SCIP_RETCODE	SCIPnodepqSetNodesel (SCIP_NODEPQ *nodepq, SCIP_SET set, SCIP_NODESEL *nodesel)

int	SCIPnodepqCompare (SCIP_NODEPQ nodepq, SCIP_SET set, SCIP_NODE node1, SCIP_NODE node2)

SCIP_RETCODE	SCIPnodepqInsert (SCIP_NODEPQ nodepq, SCIP_SET set, SCIP_NODE *node)

static SCIP_Bool	nodepqDelPos (SCIP_NODEPQ nodepq, SCIP_SET set, int rempos)

static int	nodepqFindNode (SCIP_NODEPQ nodepq, SCIP_SET set, SCIP_NODE *node)

SCIP_RETCODE	SCIPnodepqRemove (SCIP_NODEPQ nodepq, SCIP_SET set, SCIP_NODE *node)

SCIP_NODE *	SCIPnodepqFirst (const SCIP_NODEPQ *nodepq)

SCIP_NODE **	SCIPnodepqNodes (const SCIP_NODEPQ *nodepq)

int	SCIPnodepqLen (const SCIP_NODEPQ *nodepq)

SCIP_Real	SCIPnodepqGetLowerbound (SCIP_NODEPQ nodepq, SCIP_SET set)

SCIP_NODE *	SCIPnodepqGetLowerboundNode (SCIP_NODEPQ nodepq, SCIP_SET set)

SCIP_Real	SCIPnodepqGetLowerboundSum (SCIP_NODEPQ *nodepq)

SCIP_RETCODE	SCIPnodepqBound (SCIP_NODEPQ nodepq, BMS_BLKMEM blkmem, SCIP_SET set, SCIP_STAT stat, SCIP_EVENTFILTER eventfilter, SCIP_EVENTQUEUE eventqueue, SCIP_TREE tree, SCIP_REOPT reopt, SCIP_LP *lp, SCIP_Real cutoffbound)

static	SCIP_DECL_PARAMCHGD (paramChgdNodeselStdPriority)

static	SCIP_DECL_PARAMCHGD (paramChgdNodeselMemsavePriority)

SCIP_RETCODE	SCIPnodeselCopyInclude (SCIP_NODESEL nodesel, SCIP_SET set)

static SCIP_RETCODE	doNodeselCreate (SCIP_NODESEL *nodesel, SCIP_SET set, SCIP_MESSAGEHDLR messagehdlr, BMS_BLKMEM blkmem, const char name, const char desc, int stdpriority, int memsavepriority, SCIP_DECL_NODESELCOPY((nodeselcopy)), SCIP_DECL_NODESELFREE((nodeselfree)), SCIP_DECL_NODESELINIT((nodeselinit)), SCIP_DECL_NODESELEXIT((nodeselexit)), SCIP_DECL_NODESELINITSOL((nodeselinitsol)), SCIP_DECL_NODESELEXITSOL((nodeselexitsol)), SCIP_DECL_NODESELSELECT((nodeselselect)), SCIP_DECL_NODESELCOMP((nodeselcomp)), SCIP_NODESELDATA *nodeseldata)

SCIP_RETCODE	SCIPnodeselCreate (SCIP_NODESEL *nodesel, SCIP_SET set, SCIP_MESSAGEHDLR messagehdlr, BMS_BLKMEM blkmem, const char name, const char desc, int stdpriority, int memsavepriority, SCIP_DECL_NODESELCOPY((nodeselcopy)), SCIP_DECL_NODESELFREE((nodeselfree)), SCIP_DECL_NODESELINIT((nodeselinit)), SCIP_DECL_NODESELEXIT((nodeselexit)), SCIP_DECL_NODESELINITSOL((nodeselinitsol)), SCIP_DECL_NODESELEXITSOL((nodeselexitsol)), SCIP_DECL_NODESELSELECT((nodeselselect)), SCIP_DECL_NODESELCOMP((nodeselcomp)), SCIP_NODESELDATA *nodeseldata)

SCIP_RETCODE	SCIPnodeselFree (SCIP_NODESEL *nodesel, SCIP_SET set)

SCIP_RETCODE	SCIPnodeselInit (SCIP_NODESEL nodesel, SCIP_SET set)

SCIP_RETCODE	SCIPnodeselExit (SCIP_NODESEL nodesel, SCIP_SET set)

SCIP_RETCODE	SCIPnodeselInitsol (SCIP_NODESEL nodesel, SCIP_SET set)

SCIP_RETCODE	SCIPnodeselExitsol (SCIP_NODESEL nodesel, SCIP_SET set)

SCIP_RETCODE	SCIPnodeselSelect (SCIP_NODESEL nodesel, SCIP_SET set, SCIP_NODE **selnode)

int	SCIPnodeselCompare (SCIP_NODESEL nodesel, SCIP_SET set, SCIP_NODE node1, SCIP_NODE node2)

const char *	SCIPnodeselGetName (SCIP_NODESEL *nodesel)

const char *	SCIPnodeselGetDesc (SCIP_NODESEL *nodesel)

int	SCIPnodeselGetStdPriority (SCIP_NODESEL *nodesel)

void	SCIPnodeselSetStdPriority (SCIP_NODESEL nodesel, SCIP_SET set, int priority)

int	SCIPnodeselGetMemsavePriority (SCIP_NODESEL *nodesel)

void	SCIPnodeselSetMemsavePriority (SCIP_NODESEL nodesel, SCIP_SET set, int priority)

SCIP_NODESELDATA *	SCIPnodeselGetData (SCIP_NODESEL *nodesel)

void	SCIPnodeselSetData (SCIP_NODESEL nodesel, SCIP_NODESELDATA nodeseldata)

void	SCIPnodeselSetCopy (SCIP_NODESEL nodesel, SCIP_DECL_NODESELCOPY((nodeselcopy)))

void	SCIPnodeselSetFree (SCIP_NODESEL nodesel, SCIP_DECL_NODESELFREE((nodeselfree)))

void	SCIPnodeselSetInit (SCIP_NODESEL nodesel, SCIP_DECL_NODESELINIT((nodeselinit)))

void	SCIPnodeselSetExit (SCIP_NODESEL nodesel, SCIP_DECL_NODESELEXIT((nodeselexit)))

void	SCIPnodeselSetInitsol (SCIP_NODESEL nodesel, SCIP_DECL_NODESELINITSOL((nodeselinitsol)))

void	SCIPnodeselSetExitsol (SCIP_NODESEL nodesel, SCIP_DECL_NODESELEXITSOL((nodeselexitsol)))

SCIP_Bool	SCIPnodeselIsInitialized (SCIP_NODESEL *nodesel)

void	SCIPnodeselEnableOrDisableClocks (SCIP_NODESEL *nodesel, SCIP_Bool enable)

SCIP_Real	SCIPnodeselGetSetupTime (SCIP_NODESEL *nodesel)

SCIP_Real	SCIPnodeselGetTime (SCIP_NODESEL *nodesel)

Macro Definition Documentation

◆ PQ_PARENT

#define PQ_PARENT ( q ) (((q)+1)/2-1)

Definition at line 58 of file nodesel.c.

◆ PQ_LEFTCHILD

#define PQ_LEFTCHILD ( p ) (2*(p)+1)

Definition at line 59 of file nodesel.c.

◆ PQ_RIGHTCHILD

#define PQ_RIGHTCHILD ( p ) (2*(p)+2)

Definition at line 60 of file nodesel.c.

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP()

static SCIP_DECL_SORTPTRCOMP ( nodeCompNumber )

static

node comparator for node numbers

Definition at line 65 of file nodesel.c.

References NULL, and number.

◆ nodepqResize()

static SCIP_RETCODE nodepqResize	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		int	minsize
	)

static

resizes node memory to hold at least the given number of nodes

Parameters

nodepq	node priority queue
set	global SCIP settings
minsize	minimal number of storable nodes

Definition at line 85 of file nodesel.c.

References SCIP_NodePQ::bfsposs, SCIP_NodePQ::bfsqueue, BMSreallocMemoryArray, NULL, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcTreeGrowSize(), SCIP_NodePQ::size, and SCIP_NodePQ::slots.

Referenced by SCIPnodepqInsert(), and SCIPnodepqSetNodesel().

◆ SCIPnodepqCreate()

SCIP_RETCODE SCIPnodepqCreate	(	SCIP_NODEPQ **	nodepq,
		SCIP_SET *	set,
		SCIP_NODESEL *	nodesel
	)

creates node priority queue

Parameters

nodepq	pointer to a node priority queue
set	global SCIP settings
nodesel	node selector to use for sorting the nodes in the queue

Definition at line 105 of file nodesel.c.

References BMSallocMemory, NULL, SCIP_ALLOC, and SCIP_OKAY.

Referenced by SCIPnodepqSetNodesel(), and SCIPtreeCreate().

◆ SCIPnodepqDestroy()

void SCIPnodepqDestroy ( SCIP_NODEPQ ** nodepq )

frees node priority queue, but not the data nodes themselves

Parameters

nodepq pointer to a node priority queue

Definition at line 127 of file nodesel.c.

References BMSfreeMemory, BMSfreeMemoryArrayNull, and NULL.

Referenced by SCIPnodepqFree(), and SCIPnodepqSetNodesel().

◆ SCIPnodepqFree()

SCIP_RETCODE SCIPnodepqFree	(	SCIP_NODEPQ **	nodepq,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_TREE *	tree,
		SCIP_LP *	lp
	)

frees node priority queue and all nodes in the queue

Parameters

nodepq	pointer to a node priority queue
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics
eventfilter	event filter for global (not variable dependent) events
eventqueue	event queue
tree	branch and bound tree
lp	current LP data

Definition at line 141 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPnodepqClear(), and SCIPnodepqDestroy().

Referenced by SCIPtreeFree().

◆ SCIPnodepqClear()

SCIP_RETCODE SCIPnodepqClear	(	SCIP_NODEPQ *	nodepq,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_TREE *	tree,
		SCIP_LP *	lp
	)

deletes all nodes in the node priority queue

Parameters

nodepq	node priority queue
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics
eventfilter	event filter for global (not variable dependent) events
eventqueue	event queue
tree	branch and bound tree
lp	current LP data

Definition at line 165 of file nodesel.c.

References SCIP_NodePQ::len, SCIP_NodePQ::lowerboundsum, NULL, SCIP_CALL, SCIP_NODETYPE_LEAF, SCIP_OKAY, SCIPnodeFree(), SCIPnodeGetType(), SCIPsortDownPtr(), and SCIP_NodePQ::slots.

Referenced by SCIPnodepqFree(), and SCIPtreeClear().

◆ SCIPnodepqGetNodesel()

SCIP_NODESEL * SCIPnodepqGetNodesel ( SCIP_NODEPQ * nodepq )

returns the node selector associated with the given node priority queue

Parameters

nodepq node priority queue

Definition at line 206 of file nodesel.c.

References SCIP_NodePQ::nodesel, and NULL.

Referenced by SCIPtreeGetBestChild(), SCIPtreeGetBestNode(), SCIPtreeGetBestSibling(), SCIPtreeGetNodesel(), and SCIPtreeSetNodesel().

◆ SCIPnodepqSetNodesel()

SCIP_RETCODE SCIPnodepqSetNodesel	(	SCIP_NODEPQ **	nodepq,
		SCIP_SET *	set,
		SCIP_NODESEL *	nodesel
	)

sets the node selector used for sorting the nodes in the queue, and resorts the queue if necessary

Parameters

nodepq	pointer to a node priority queue
set	global SCIP settings
nodesel	node selector to use for sorting the nodes in the queue

Definition at line 216 of file nodesel.c.

References nodepqResize(), NULL, SCIP_CALL, SCIP_OKAY, SCIPnodepqCreate(), SCIPnodepqDestroy(), and SCIPnodepqInsert().

Referenced by SCIPtreeSetNodesel().

◆ SCIPnodepqCompare()

int SCIPnodepqCompare	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		SCIP_NODE *	node1,
		SCIP_NODE *	node2
	)

compares two nodes; returns -1/0/+1 if node1 better/equal/worse than node2

Parameters

nodepq	node priority queue
set	global SCIP settings
node1	first node to compare
node2	second node to compare

Definition at line 264 of file nodesel.c.

References SCIP_NodePQ::nodesel, NULL, and SCIPnodeselCompare().

Referenced by SCIPnodeFocus().

◆ SCIPnodepqInsert()

SCIP_RETCODE SCIPnodepqInsert	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		SCIP_NODE *	node
	)

inserts node into node priority queue

Parameters

nodepq	node priority queue
set	global SCIP settings
node	node to be inserted

Definition at line 280 of file nodesel.c.

References SCIP_NodePQ::bfsposs, SCIP_NodePQ::bfsqueue, SCIP_NodePQ::len, SCIP_NodePQ::lowerboundsum, nodepqResize(), SCIP_NodePQ::nodesel, NULL, PQ_PARENT, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPnodeGetLowerbound(), SCIPsetDebugMsg, and SCIP_NodePQ::slots.

Referenced by nodeToLeaf(), and SCIPnodepqSetNodesel().

◆ nodepqDelPos()

static SCIP_Bool nodepqDelPos	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		int	rempos
	)

static

deletes node at given position from the node priority queue; returns TRUE, if the parent fell down to the free position

Parameters

nodepq	node priority queue
set	global SCIP settings
rempos	queue position of node to remove

Definition at line 342 of file nodesel.c.

References SCIP_NodePQ::bfsposs, SCIP_NodePQ::bfsqueue, FALSE, SCIP_NodePQ::len, SCIP_NodePQ::lowerboundsum, SCIP_NodePQ::nodesel, NULL, PQ_LEFTCHILD, PQ_PARENT, PQ_RIGHTCHILD, SCIP_Bool, SCIP_Real, SCIPnodeGetLowerbound(), SCIPsetDebugMsg, SCIP_NodePQ::slots, and TRUE.

Referenced by SCIPnodepqBound(), and SCIPnodepqRemove().

◆ nodepqFindNode()

static int nodepqFindNode	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		SCIP_NODE *	node
	)

static

returns the position of given node in the priority queue, or -1 if not existing

Parameters

nodepq	node priority queue
set	global SCIP settings
node	node to find

Definition at line 500 of file nodesel.c.

References SCIP_NodePQ::len, NULL, and SCIP_NodePQ::slots.

Referenced by SCIPnodepqRemove().

◆ SCIPnodepqRemove()

SCIP_RETCODE SCIPnodepqRemove	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set,
		SCIP_NODE *	node
	)

removes node from the node priority queue

Parameters

nodepq	node priority queue
set	global SCIP settings
node	node to remove

Definition at line 524 of file nodesel.c.

References nodepqDelPos(), nodepqFindNode(), SCIP_INVALIDDATA, SCIP_OKAY, and SCIPerrorMessage.

Referenced by SCIPnodeFocus().

◆ SCIPnodepqFirst()

SCIP_NODE * SCIPnodepqFirst ( const SCIP_NODEPQ * nodepq )

returns the best node of the queue without removing it

Parameters

nodepq node priority queue

Definition at line 545 of file nodesel.c.

References SCIP_NodePQ::len, NULL, and SCIP_NodePQ::slots.

Referenced by SCIPtreeGetBestLeaf().

◆ SCIPnodepqNodes()

SCIP_NODE ** SCIPnodepqNodes ( const SCIP_NODEPQ * nodepq )

returns the nodes array of the queue

Parameters

nodepq node priority queue

Definition at line 561 of file nodesel.c.

References NULL, and SCIP_NodePQ::slots.

Referenced by SCIPgetLeaves(), and SCIPgetOpenNodesData().

◆ SCIPnodepqLen()

int SCIPnodepqLen ( const SCIP_NODEPQ * nodepq )

returns the number of nodes stored in the node priority queue

Parameters

nodepq node priority queue

Definition at line 571 of file nodesel.c.

References SCIP_NodePQ::len, and NULL.

Referenced by SCIPgetLeaves(), SCIPgetNLeaves(), SCIPgetOpenNodesData(), SCIPnodeFocus(), SCIPnodepqBound(), and SCIPtreeGetNLeaves().

◆ SCIPnodepqGetLowerbound()

SCIP_Real SCIPnodepqGetLowerbound	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set
	)

gets the minimal lower bound of all nodes in the queue

Parameters

nodepq	node priority queue
set	global SCIP settings

Definition at line 582 of file nodesel.c.

References SCIP_NodePQ::bfsqueue, SCIP_NodePQ::len, SCIP_NodePQ::nodesel, NULL, SCIPnodeGetLowerbound(), SCIPsetInfinity(), and SCIP_NodePQ::slots.

Referenced by SCIPtreeGetLowerbound().

◆ SCIPnodepqGetLowerboundNode()

SCIP_NODE * SCIPnodepqGetLowerboundNode	(	SCIP_NODEPQ *	nodepq,
		SCIP_SET *	set
	)

gets the node with minimal lower bound of all nodes in the queue

Parameters

nodepq	node priority queue
set	global SCIP settings

Definition at line 605 of file nodesel.c.

References SCIP_NodePQ::bfsqueue, SCIP_NodePQ::len, SCIP_NodePQ::nodesel, NULL, and SCIP_NodePQ::slots.

Referenced by SCIPtreeGetLowerboundNode().

◆ SCIPnodepqGetLowerboundSum()

SCIP_Real SCIPnodepqGetLowerboundSum ( SCIP_NODEPQ * nodepq )

gets the sum of lower bounds of all nodes in the queue

Parameters

nodepq node priority queue

Definition at line 629 of file nodesel.c.

References SCIP_NodePQ::lowerboundsum, and NULL.

Referenced by SCIPtreeGetAvgLowerbound().

◆ SCIPnodepqBound()

SCIP_RETCODE SCIPnodepqBound	(	SCIP_NODEPQ *	nodepq,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTFILTER *	eventfilter,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_TREE *	tree,
		SCIP_REOPT *	reopt,
		SCIP_LP *	lp,
		SCIP_Real	cutoffbound
	)

free all nodes from the queue that are cut off by the given upper bound

Parameters

nodepq	node priority queue
blkmem	block memory buffer
set	global SCIP settings
stat	dynamic problem statistics
eventfilter	event filter for global (not variable dependent) events
eventqueue	event queue
tree	branch and bound tree
reopt	reoptimization data structure
lp	current LP data
cutoffbound	cutoff bound: all nodes with lowerbound >= cutoffbound are cut off

Definition at line 639 of file nodesel.c.

References SCIP_Node::active, SCIP_Node::cutoff, SCIP_Node::depth, SCIP_Tree::effectiverootdepth, FALSE, SCIP_Tree::focusnode, SCIP_Stat::lastlowerbound, SCIP_NodePQ::len, SCIP_Node::lowerbound, nodepqDelPos(), NULL, PQ_LEFTCHILD, PQ_RIGHTCHILD, SCIP_Tree::root, SCIP_Stat::rootlowerbound, SCIP_CALL, SCIP_EVENTTYPE_NODEINFEASIBLE, SCIP_NODETYPE_LEAF, SCIP_OKAY, SCIP_Real, SCIPlpGetSolstat(), SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetLowerbound(), SCIPnodeGetType(), SCIPnodepqLen(), SCIPreoptCheckCutoff(), SCIPsetDebugMsg, SCIPsetInfinity(), SCIPsetIsGE(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPstatUpdatePrimalDualIntegrals(), SCIPtreeGetLowerbound(), SCIPvisualCutoffNode(), SCIP_NodePQ::slots, TRUE, and SCIP_Stat::visual.

Referenced by SCIPtreeCutoff().

◆ SCIP_DECL_PARAMCHGD() [1/2]

static SCIP_DECL_PARAMCHGD ( paramChgdNodeselStdPriority )

static

method to call, when the standard mode priority of a node selector was changed

Definition at line 738 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPparamGetData(), SCIPparamGetInt(), and SCIPsetNodeselStdPriority().

◆ SCIP_DECL_PARAMCHGD() [2/2]

static SCIP_DECL_PARAMCHGD ( paramChgdNodeselMemsavePriority )

static

method to call, when the memory saving mode priority of a node selector was changed

Definition at line 753 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPparamGetData(), SCIPparamGetInt(), and SCIPsetNodeselMemsavePriority().

◆ SCIPnodeselCopyInclude()

SCIP_RETCODE SCIPnodeselCopyInclude	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set
	)

copies the given node selector to a new scip

Parameters

nodesel	node selector
set	SCIP_SET of SCIP to copy to

Definition at line 767 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPnodeselGetName(), and SCIPsetDebugMsg.

Referenced by SCIPsetCopyPlugins().

◆ doNodeselCreate()

static SCIP_RETCODE doNodeselCreate	(	SCIP_NODESEL **	nodesel,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		BMS_BLKMEM *	blkmem,
		const char *	name,
		const char *	desc,
		int	stdpriority,
		int	memsavepriority,
		SCIP_DECL_NODESELCOPY((*nodeselcopy))	,
		SCIP_DECL_NODESELFREE((*nodeselfree))	,
		SCIP_DECL_NODESELINIT((*nodeselinit))	,
		SCIP_DECL_NODESELEXIT((*nodeselexit))	,
		SCIP_DECL_NODESELINITSOL((*nodeselinitsol))	,
		SCIP_DECL_NODESELEXITSOL((*nodeselexitsol))	,
		SCIP_DECL_NODESELSELECT((*nodeselselect))	,
		SCIP_DECL_NODESELCOMP((*nodeselcomp))	,
		SCIP_NODESELDATA *	nodeseldata
	)

static

internal method for creating a node selector

Parameters

nodesel	pointer to store node selector
set	global SCIP settings
messagehdlr	message handler
blkmem	block memory for parameter settings
name	name of node selector
desc	description of node selector
stdpriority	priority of the node selector in standard mode
memsavepriority	priority of the node selector in memory saving mode
nodeseldata	node selector data

Definition at line 786 of file nodesel.c.

References BMSallocMemory, BMSclearMemory, BMSduplicateMemoryArray, FALSE, NULL, paramname, SCIP_ALLOC, SCIP_CALL, SCIP_CLOCKTYPE_DEFAULT, SCIP_MAXSTRLEN, SCIP_OKAY, SCIPclockCreate(), SCIPsetAddIntParam(), SCIPsnprintf(), and TRUE.

Referenced by SCIPnodeselCreate().

◆ SCIPnodeselCreate()

SCIP_RETCODE SCIPnodeselCreate	(	SCIP_NODESEL **	nodesel,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		BMS_BLKMEM *	blkmem,
		const char *	name,
		const char *	desc,
		int	stdpriority,
		int	memsavepriority,
		SCIP_DECL_NODESELCOPY((*nodeselcopy))	,
		SCIP_DECL_NODESELFREE((*nodeselfree))	,
		SCIP_DECL_NODESELINIT((*nodeselinit))	,
		SCIP_DECL_NODESELEXIT((*nodeselexit))	,
		SCIP_DECL_NODESELINITSOL((*nodeselinitsol))	,
		SCIP_DECL_NODESELEXITSOL((*nodeselexitsol))	,
		SCIP_DECL_NODESELSELECT((*nodeselselect))	,
		SCIP_DECL_NODESELCOMP((*nodeselcomp))	,
		SCIP_NODESELDATA *	nodeseldata
	)

creates a node selector

Parameters

nodesel	pointer to store node selector
set	global SCIP settings
messagehdlr	message handler
blkmem	block memory for parameter settings
name	name of node selector
desc	description of node selector
stdpriority	priority of the node selector in standard mode
memsavepriority	priority of the node selector in memory saving mode
nodeseldata	node selector data

Definition at line 853 of file nodesel.c.

References doNodeselCreate(), NULL, SCIP_CALL_FINALLY, SCIP_OKAY, and SCIPnodeselFree().

Referenced by SCIPincludeNodesel(), and SCIPincludeNodeselBasic().

◆ SCIPnodeselFree()

SCIP_RETCODE SCIPnodeselFree	(	SCIP_NODESEL **	nodesel,
		SCIP_SET *	set
	)

frees memory of node selector

Parameters

nodesel	pointer to node selector data structure
set	global SCIP settings

Definition at line 887 of file nodesel.c.

References BMSfreeMemory, BMSfreeMemoryArrayNull, NULL, SCIP_CALL, SCIP_OKAY, and SCIPclockFree().

Referenced by SCIPnodeselCreate().

◆ SCIPnodeselInit()

SCIP_RETCODE SCIPnodeselInit	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set
	)

initializes node selector

Parameters

nodesel	node selector
set	global SCIP settings

Definition at line 916 of file nodesel.c.

References SCIP_Nodesel::initialized, SCIP_Nodesel::name, SCIP_Nodesel::nodeseltime, NULL, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockReset(), SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, SCIP_Nodesel::setuptime, and TRUE.

◆ SCIPnodeselExit()

SCIP_RETCODE SCIPnodeselExit	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set
	)

deinitializes node selector

Parameters

nodesel	node selector
set	global SCIP settings

Definition at line 952 of file nodesel.c.

References FALSE, SCIP_Nodesel::initialized, SCIP_Nodesel::name, NULL, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, and SCIP_Nodesel::setuptime.

◆ SCIPnodeselInitsol()

SCIP_RETCODE SCIPnodeselInitsol	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set
	)

informs node selector that the branch and bound process is being started

Parameters

nodesel	node selector
set	global SCIP settings

Definition at line 982 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Nodesel::setuptime.

◆ SCIPnodeselExitsol()

SCIP_RETCODE SCIPnodeselExitsol	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set
	)

informs node selector that the branch and bound process data is being freed

Parameters

nodesel	node selector
set	global SCIP settings

Definition at line 1006 of file nodesel.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Nodesel::setuptime.

◆ SCIPnodeselSelect()

SCIP_RETCODE SCIPnodeselSelect	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set,
		SCIP_NODE **	selnode
	)

select next node to be processed

Parameters

nodesel	node selector
set	global SCIP settings
selnode	pointer to store node to be processed next

Definition at line 1030 of file nodesel.c.

References SCIP_Nodesel::nodeseltime, NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), and SCIPclockStop().

Referenced by SCIPsolveCIP().

◆ SCIPnodeselCompare()

int SCIPnodeselCompare	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set,
		SCIP_NODE *	node1,
		SCIP_NODE *	node2
	)

compares two nodes; returns -1/0/+1 if node1 better/equal/worse than node2

Parameters

nodesel	node selector
set	global SCIP settings
node1	first node to compare
node2	second node to compare

Definition at line 1053 of file nodesel.c.

References NULL.

Referenced by SCIPnodepqCompare(), SCIPtreeGetBestChild(), SCIPtreeGetBestNode(), and SCIPtreeGetBestSibling().

◆ SCIPnodeselSetStdPriority()

void SCIPnodeselSetStdPriority	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set,
		int	priority
	)

gets priority of node selector in standard mode

Parameters

nodesel	node selector
set	global SCIP settings
priority	new priority of the node selector

Definition at line 1100 of file nodesel.c.

References NULL, and SCIP_Nodesel::stdpriority.

Referenced by SCIPsetNodeselStdPriority().

◆ SCIPnodeselSetMemsavePriority()

void SCIPnodeselSetMemsavePriority	(	SCIP_NODESEL *	nodesel,
		SCIP_SET *	set,
		int	priority
	)

sets priority of node selector in memory saving mode

Parameters

nodesel	node selector
set	global SCIP settings
priority	new priority of the node selector

Definition at line 1124 of file nodesel.c.

References SCIP_Nodesel::memsavepriority, and NULL.

Referenced by SCIPsetNodeselMemsavePriority().

◆ SCIPnodeselSetCopy()

void SCIPnodeselSetCopy	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELCOPY((*nodeselcopy))
	)

sets copy method of node selector

Parameters

nodesel node selector

Definition at line 1161 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselCopy().

◆ SCIPnodeselSetFree()

void SCIPnodeselSetFree	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELFREE((*nodeselfree))
	)

sets destructor method of node selector

Parameters

nodesel node selector

Definition at line 1172 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselFree().

◆ SCIPnodeselSetInit()

void SCIPnodeselSetInit	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELINIT((*nodeselinit))
	)

sets initialization method of node selector

Parameters

nodesel node selector

Definition at line 1183 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselInit().

◆ SCIPnodeselSetExit()

void SCIPnodeselSetExit	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELEXIT((*nodeselexit))
	)

sets deinitialization method of node selector

Parameters

nodesel node selector

Definition at line 1194 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselExit().

◆ SCIPnodeselSetInitsol()

void SCIPnodeselSetInitsol	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELINITSOL((*nodeselinitsol))
	)

sets solving process initialization method of node selector

Parameters

nodesel node selector

Definition at line 1205 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselInitsol().

◆ SCIPnodeselSetExitsol()

void SCIPnodeselSetExitsol	(	SCIP_NODESEL *	nodesel,
		SCIP_DECL_NODESELEXITSOL((*nodeselexitsol))
	)

sets solving process deinitialization method of node selector

Parameters

nodesel node selector

Definition at line 1216 of file nodesel.c.

References NULL.

Referenced by SCIPsetNodeselExitsol().

◆ SCIPnodeselEnableOrDisableClocks()

void SCIPnodeselEnableOrDisableClocks	(	SCIP_NODESEL *	nodesel,
		SCIP_Bool	enable
	)

enables or disables all clocks of nodesel, depending on the value of the flag

Parameters

nodesel	the node selector for which all clocks should be enabled or disabled
enable	should the clocks of the node selector be enabled?

Definition at line 1237 of file nodesel.c.

References SCIP_Nodesel::nodeseltime, NULL, SCIPclockEnableOrDisable(), and SCIP_Nodesel::setuptime.

SCIP

Detailed Description

Macros

Functions

Macro Definition Documentation

◆ PQ_PARENT

◆ PQ_LEFTCHILD

◆ PQ_RIGHTCHILD

Function Documentation

◆ SCIP_DECL_SORTPTRCOMP()

◆ nodepqResize()

◆ SCIPnodepqCreate()

◆ SCIPnodepqDestroy()

◆ SCIPnodepqFree()

◆ SCIPnodepqClear()

◆ SCIPnodepqGetNodesel()

◆ SCIPnodepqSetNodesel()

◆ SCIPnodepqCompare()

◆ SCIPnodepqInsert()

◆ nodepqDelPos()

◆ nodepqFindNode()

◆ SCIPnodepqRemove()

◆ SCIPnodepqFirst()

◆ SCIPnodepqNodes()

◆ SCIPnodepqLen()

◆ SCIPnodepqGetLowerbound()

◆ SCIPnodepqGetLowerboundNode()

◆ SCIPnodepqGetLowerboundSum()

◆ SCIPnodepqBound()

◆ SCIP_DECL_PARAMCHGD() [1/2]

◆ SCIP_DECL_PARAMCHGD() [2/2]

◆ SCIPnodeselCopyInclude()

◆ doNodeselCreate()

◆ SCIPnodeselCreate()

◆ SCIPnodeselFree()

◆ SCIPnodeselInit()

◆ SCIPnodeselExit()

◆ SCIPnodeselInitsol()

◆ SCIPnodeselExitsol()

◆ SCIPnodeselSelect()

◆ SCIPnodeselCompare()

◆ SCIPnodeselSetStdPriority()

◆ SCIPnodeselSetMemsavePriority()

◆ SCIPnodeselSetCopy()

◆ SCIPnodeselSetFree()

◆ SCIPnodeselSetInit()

◆ SCIPnodeselSetExit()

◆ SCIPnodeselSetInitsol()

◆ SCIPnodeselSetExitsol()

◆ SCIPnodeselEnableOrDisableClocks()