Hash Set

Detailed Description

very lightweight hash set of pointers

Functions
SCIP_RETCODE	SCIPhashsetCreate (SCIP_HASHSET **hashset, BMS_BLKMEM *blkmem, int size)
void	SCIPhashsetFree (SCIP_HASHSET **hashset, BMS_BLKMEM *blkmem)
SCIP_RETCODE	SCIPhashsetInsert (SCIP_HASHSET *hashset, BMS_BLKMEM *blkmem, void *element)
SCIP_Bool	SCIPhashsetExists (SCIP_HASHSET *hashset, void *element)
SCIP_RETCODE	SCIPhashsetRemove (SCIP_HASHSET *hashset, void *element)
void	SCIPhashsetPrintStatistics (SCIP_HASHSET *hashset, SCIP_MESSAGEHDLR *messagehdlr)
SCIP_Bool	SCIPhashsetIsEmpty (SCIP_HASHSET *hashset)
int	SCIPhashsetGetNElements (SCIP_HASHSET *hashset)
int	SCIPhashsetGetNSlots (SCIP_HASHSET *hashset)
void **	SCIPhashsetGetSlots (SCIP_HASHSET *hashset)
void	SCIPhashsetRemoveAll (SCIP_HASHSET *hashset)

Function Documentation

SCIPhashsetCreate()

SCIP_RETCODE SCIPhashsetCreate	(	SCIP_HASHSET **	hashset,
		BMS_BLKMEM *	blkmem,
		int	size
	)

creates a hash set of pointers

Parameters

hashset	pointer to store the created hash set
blkmem	block memory used to store hash set entries
size	initial size of the hash set; it is guaranteed that the set is not resized if at most that many elements are inserted

Definition at line 3708 of file misc.c.

References BMSallocBlockMemory, BMSallocClearBlockMemoryArray, MAX, NULL, SCIP_ALLOC, SCIP_OKAY, and SCIPhashsetGetNSlots().

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), detectSocNorm(), dualBoundStrengthening(), mod2MatrixAddCol(), processHashlists(), SCIPrealHashCode(), and SCIPreoptSaveActiveConss().

SCIPhashsetFree()

void SCIPhashsetFree	(	SCIP_HASHSET **	hashset,
		BMS_BLKMEM *	blkmem
	)

frees the hash set

Parameters

hashset	pointer to the hash set
blkmem	block memory used to store hash set entries

Definition at line 3739 of file misc.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArray, and SCIPhashsetGetNSlots().

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), destroyMod2Matrix(), detectSocNorm(), dualBoundStrengthening(), mod2matrixRemoveCol(), processHashlists(), SCIPrealHashCode(), and SCIPreoptFree().

SCIPhashsetInsert()

SCIP_RETCODE SCIPhashsetInsert	(	SCIP_HASHSET *	hashset,
		BMS_BLKMEM *	blkmem,
		void *	element
	)

inserts new element into the hash set

Parameters

hashset	hash set
blkmem	block memory used to store hash set entries
element	element to insert

Definition at line 3749 of file misc.c.

References hashsetCheckLoad(), hashsetInsert(), NULL, SCIP_CALL, SCIP_OKAY, and SCIP_HashSet::slots.

Referenced by computeSymmetryGroup(), DECL_CURVCHECK(), detectSocNorm(), dualBoundStrengthening(), mod2colLinkRow(), processHashlists(), SCIPrealHashCode(), SCIPreoptApplyGlbConss(), and SCIPreoptSaveActiveConss().

SCIPhashsetExists()

SCIP_Bool SCIPhashsetExists	(	SCIP_HASHSET *	hashset,
		void *	element
	)

checks whether an element exists in the hash set

Parameters

hashset	hash set
element	element to search for

Definition at line 3766 of file misc.c.

References ELEM_DISTANCE, FALSE, hashSetDesiredPos(), NULL, SCIPhashsetGetNSlots(), SCIP_HashSet::slots, and TRUE.

Referenced by cleanActiveConss(), computeSymmetryGroup(), DECL_CURVCHECK(), detectSocNorm(), dualBoundStrengthening(), mod2colLinkRow(), mod2colUnlinkRow(), processHashlists(), SCIP_DECL_HASHKEYEQ(), SCIPhashsetRemove(), SCIPrealHashCode(), SCIPreoptApplyGlbConss(), SCIPreoptConsCanBeDeleted(), SCIPreoptResetActiveConss(), and SCIPreoptSaveActiveConss().

SCIPhashsetRemove()

SCIP_RETCODE SCIPhashsetRemove	(	SCIP_HASHSET *	hashset,
		void *	element
	)

removes an element from the hash set, if it exists

Parameters

hashset	hash set
element	origin to remove from the list

Definition at line 3807 of file misc.c.

References ELEM_DISTANCE, hashSetDesiredPos(), SCIP_HashSet::nelements, NULL, SCIP_OKAY, SCIPhashsetExists(), SCIPhashsetGetNSlots(), SCIP_HashSet::slots, and TRUE.

Referenced by detectSocNorm(), mod2colUnlinkRow(), and SCIPrealHashCode().

SCIPhashsetPrintStatistics()

void SCIPhashsetPrintStatistics	(	SCIP_HASHSET *	hashset,
		SCIP_MESSAGEHDLR *	messagehdlr
	)

prints statistics about hash set usage

Parameters

hashset	hash set
messagehdlr	message handler

Definition at line 3882 of file misc.c.

References hashSetDesiredPos(), MAX, SCIP_HashSet::nelements, NULL, SCIP_Real, SCIPhashsetGetNSlots(), SCIPmessagePrintInfo(), and SCIP_HashSet::slots.

Referenced by SCIPrealHashCode().

SCIPhashsetIsEmpty()

SCIP_Bool SCIPhashsetIsEmpty

(

SCIP_HASHSET *

hashset

)

indicates whether a hash set has no entries

Parameters

hashset

hash set

Definition at line 3933 of file misc.c.

References SCIP_HashSet::nelements.

Referenced by SCIPrealHashCode().

SCIPhashsetGetNElements()

int SCIPhashsetGetNElements

(

SCIP_HASHSET *

hashset

)

gives the number of elements in a hash set

Parameters

hashset

hash set

Definition at line 3941 of file misc.c.

References SCIP_HashSet::nelements.

Referenced by detectSocNorm(), mod2matrixPreprocessColumns(), SCIP_DECL_HASHKEYEQ(), and SCIPrealHashCode().

SCIPhashsetGetNSlots()

int SCIPhashsetGetNSlots

(

SCIP_HASHSET *

hashset

)

gives the number of slots of a hash set

Parameters

hashset

hash set

Definition at line 3949 of file misc.c.

References SCIP_HashSet::shift.

Referenced by doSeparation(), hashsetCheckLoad(), hashsetInsert(), mod2colUnlinkRow(), mod2matrixRemoveCol(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), SCIPhashsetCreate(), SCIPhashsetExists(), SCIPhashsetFree(), SCIPhashsetPrintStatistics(), SCIPhashsetRemove(), SCIPhashsetRemoveAll(), and SCIPrealHashCode().

SCIPhashsetGetSlots()

void** SCIPhashsetGetSlots

(

SCIP_HASHSET *

hashset

)

gives the array of hash set slots; contains all elements in indetermined order and may contain NULL values

Parameters

hashset

hash set

Definition at line 3957 of file misc.c.

References SCIP_HashSet::slots.

Referenced by doSeparation(), mod2colUnlinkRow(), mod2matrixPreprocessColumns(), mod2matrixRemoveCol(), SCIP_DECL_HASHKEYEQ(), SCIP_DECL_HASHKEYVAL(), and SCIPrealHashCode().

SCIPhashsetRemoveAll()

void SCIPhashsetRemoveAll

(

SCIP_HASHSET *

hashset

)

removes all entries in a hash set.

Parameters

hashset

hash set

Definition at line 3965 of file misc.c.

References BMSclearMemoryArray, SCIP_HashSet::nelements, SCIPhashsetGetNSlots(), and SCIP_HashSet::slots.

Referenced by cleanActiveConss(), and SCIPrealHashCode().