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Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a > Class Template Reference

Symmetry-breaking brancher with generic view and value selection. More...

#include <ldsb.hh>

Public Member Functions

 LDSBSetBrancher (Space &home, bool share, LDSBSetBrancher &b)
 Constructor for cloning b. More...
 
 LDSBSetBrancher (Home home, ViewArray< View > &x, ViewSel< View > *vs[n], ValSelCommitBase< View, Val > *vsc, SymmetryImp< View > **syms, int nsyms, SetBranchFilter bf)
 Constructor for creation. More...
 
virtual const Choicechoice (Space &home)
 Return choice. More...
 
virtual ExecStatus commit (Space &home, const Choice &c, unsigned int b)
 Perform commit for choice c and alternative b. More...
 
virtual Actorcopy (Space &home, bool share)
 Perform cloning. More...
 
void updatePart1 (Space &home, int choicePos)
 Part one of the update phase. More...
 
- Public Member Functions inherited from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >
virtual const Choicechoice (const Space &home, Archive &e)
 Return choice. More...
 
virtual size_t dispose (Space &home)
 Delete brancher and return its size. More...
 

Static Public Member Functions

static BrancherHandle post (Home home, ViewArray< View > &x, ViewSel< View > *vs[n], ValSelCommitBase< View, Val > *vsc, SymmetryImp< View > **_syms, int _nsyms, SetBranchFilter bf)
 Brancher post function. More...
 
- Static Public Member Functions inherited from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >
static BrancherHandle post (Home home, ViewArray< View > &x, ViewSel< View > *vs[n], ValSelCommitBase< View, Val > *vsc, SymmetryImp< View > **syms, int nsyms, BranchFilter bf)
 Brancher post function. More...
 
- Static Public Member Functions inherited from Gecode::ViewValBrancher< View, n, Val, a >
static BrancherHandle post (Home home, ViewArray< View > &x, ViewSel< View > *vs[n], ValSelCommitBase< View, Val > *vsc, BranchFilter bf)
 Brancher post function. More...
 

Public Attributes

int _prevPos
 Position of previous variable that was branched on. More...
 
int _nNonValueSymmetries
 Number of non-value symmetries. More...
 
int _nValueSymmetries
 Number of value symmetries. More...
 
ValueSymmetryImp< View > ** _copiedSyms
 Copy of value symmetries from the first node where the current variable was branched on. More...
 
int _nCopiedSyms
 Number of copied symmetries. More...
 
IntSet _leftBranchValues
 Set of values used on left branches for the current variable. More...
 
bool _stable
 Is the state of the brancher "stable"? More...
 
- Public Attributes inherited from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >
SymmetryImp< View > ** _syms
 Array of symmetry implementations. More...
 
int _nsyms
 Number of symmetry implementations. More...
 
int _prevPos
 

Additional Inherited Members

- Protected Types inherited from Gecode::ViewBrancher< View, n >
typedef BranchTraits< typename
View::VarType >::Filter 
BranchFilter
 The branch filter that corresponds to the var type. More...
 
- Protected Member Functions inherited from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >
 LDSBBrancher (Space &home, bool share, LDSBBrancher &b)
 Constructor for cloning b. More...
 
 LDSBBrancher (Home home, ViewArray< View > &x, ViewSel< View > *vs[n], ValSelCommitBase< View, Val > *vsc, SymmetryImp< View > **syms, int nsyms, BranchFilter bf)
 Constructor for creation. More...
 
- Protected Attributes inherited from Gecode::ViewValBrancher< View, n, Val, a >
ValSelCommitBase< View, Val > * vsc
 Value selection and commit object. More...
 

Detailed Description

template<class View, int n, class Val, unsigned int a>
class Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >

Symmetry-breaking brancher with generic view and value selection.

Implements view-based branching for an array of views (of type View) on set variables and value (of type Val).

Definition at line 61 of file ldsb.hh.

Constructor & Destructor Documentation

template<class View , int n, class Val , unsigned int a>
Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::LDSBSetBrancher ( Space home,
bool  share,
LDSBSetBrancher< View, n, Val, a > &  b 
)

Constructor for cloning b.

Definition at line 33 of file brancher.hpp.

template<class View , int n, class Val , unsigned int a>
Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::LDSBSetBrancher ( Home  home,
ViewArray< View > &  x,
ViewSel< View > *  vs[n],
ValSelCommitBase< View, Val > *  vsc,
SymmetryImp< View > **  syms,
int  nsyms,
SetBranchFilter  bf 
)

Constructor for creation.

Definition at line 5 of file brancher.hpp.

Member Function Documentation

template<class View , int n, class Val , unsigned int a>
const Choice * Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::choice ( Space home)
virtual

Return choice.

Reimplemented from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >.

Definition at line 142 of file brancher.hpp.

template<class View , int n, class Val , unsigned int a>
ExecStatus Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::commit ( Space home,
const Choice c,
unsigned int  b 
)
virtual

Perform commit for choice c and alternative b.

Reimplemented from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >.

Definition at line 161 of file brancher.hpp.

template<class View , int n, class Val , unsigned int a>
Actor * Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::copy ( Space home,
bool  share 
)
virtual

Perform cloning.

Reimplemented from Gecode::Int::LDSB::LDSBBrancher< View, n, Val, a >.

Definition at line 203 of file brancher.hpp.

template<class View , int n, class Val , unsigned int a>
BrancherHandle Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::post ( Home  home,
ViewArray< View > &  x,
ViewSel< View > *  vs[n],
ValSelCommitBase< View, Val > *  vsc,
SymmetryImp< View > **  _syms,
int  _nsyms,
SetBranchFilter  bf 
)
inlinestatic

Brancher post function.

Definition at line 210 of file brancher.hpp.

template<class View , int n, class Val , unsigned int a>
void Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::updatePart1 ( Space home,
int  choicePos 
)

Part one of the update phase.

If the branching is at a new variable, restore previously copied value symmetries, do bulk update of values used on left branches for the previous variable, and make fresh copy of resulting value symmetries.

Definition at line 95 of file brancher.hpp.

Member Data Documentation

template<class View, int n, class Val, unsigned int a>
int Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_prevPos

Position of previous variable that was branched on.

Definition at line 64 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
int Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_nNonValueSymmetries

Number of non-value symmetries.

Definition at line 66 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
int Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_nValueSymmetries

Number of value symmetries.

Definition at line 68 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
ValueSymmetryImp<View>** Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_copiedSyms

Copy of value symmetries from the first node where the current variable was branched on.

Definition at line 71 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
int Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_nCopiedSyms

Number of copied symmetries.

Definition at line 73 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
IntSet Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_leftBranchValues

Set of values used on left branches for the current variable.

Definition at line 75 of file ldsb.hh.

template<class View, int n, class Val, unsigned int a>
bool Gecode::Set::LDSB::LDSBSetBrancher< View, n, Val, a >::_stable

Is the state of the brancher "stable"?

The brancher is unstable if we are about to run either "choice" or "commit", but "updatePart1" has not been run. After "updatePart1" has been run the brancher is stable, until the second part of the update is done (in commit).

Definition at line 84 of file ldsb.hh.


The documentation for this class was generated from the following files: