Generated on Thu Mar 22 10:39:53 2012 for Gecode by doxygen 1.6.3
Gecode::Propagator

Gecode::Propagator Class Reference
[Programming actors]

Base-class for propagators. More...

#include <core.hpp>

List of all members.

Protected Member Functions

 Propagator (Home home)
 Constructor for posting.
 Propagator (Space &home, bool share, Propagator &p)
 Constructor for cloning p.

Propagation



virtual ExecStatus propagate (Space &home, const ModEventDelta &med)=0
 Propagation function.
virtual PropCost cost (const Space &home, const ModEventDelta &med) const =0
 Cost function.
ModEventDelta modeventdelta (void) const
 Return the modification event delta.
virtual ExecStatus advise (Space &home, Advisor &a, const Delta &d)
 Advise function.

Information



double afc (void) const
 Return the accumlated failure count.

Detailed Description

Base-class for propagators.

Definition at line 749 of file core.hpp.

Constructor & Destructor Documentation

Gecode::Propagator::Propagator ( Home  home  )  [inline, protected]

Constructor for posting.

Definition at line 2527 of file core.hpp.

Gecode::Propagator::Propagator ( Space &  home,
bool  share,
Propagator &  p 
) [inline, protected]

Constructor for cloning p.

Definition at line 2539 of file core.hpp.

Member Function Documentation

virtual ExecStatus Gecode::Propagator::propagate ( Space &  home,
const ModEventDelta &  med 
) [pure virtual]

Propagation function.

The propagation function must return an execution status as follows:

  • ES_FAILED: the propagator has detected failure
  • ES_NOFIX: the propagator has done propagation
  • ES_FIX: the propagator has done propagation and has computed a fixpoint. That is, running the propagator immediately again will do nothing.

Apart from the above values, a propagator can return the result from calling one of the functions defined by a space:

  • ES_SUBSUMED: the propagator is subsumed and has been already deleted.
  • ES_NOFIX_PARTIAL: the propagator has consumed some of its propagation events.
  • ES_FIX_PARTIAL: the propagator has consumed some of its propagation events and with respect to these events is at fixpoint For more details, see the individual functions.

Implemented in Gecode::Int::Arithmetic::AbsBnd< View >, Gecode::Int::Arithmetic::AbsDom< View >, Gecode::Int::Arithmetic::MaxBnd< View >, Gecode::Int::Arithmetic::NaryMaxBnd< View >, Gecode::Int::Arithmetic::MaxDom< View >, Gecode::Int::Arithmetic::NaryMaxDom< View >, Gecode::Int::Arithmetic::SqrPlusBnd< VA, VB >, Gecode::Int::Arithmetic::SqrBnd< View >, Gecode::Int::Arithmetic::SqrPlusDom< VA, VB >, Gecode::Int::Arithmetic::SqrDom< View >, Gecode::Int::Arithmetic::SqrtBnd< View >, Gecode::Int::Arithmetic::SqrtDom< View >, Gecode::Int::Arithmetic::MultZeroOne< View, pc >, Gecode::Int::Arithmetic::MultPlusBnd< Val, VA, VB, VC >, Gecode::Int::Arithmetic::MultBnd< View >, Gecode::Int::Arithmetic::MultPlusDom< Val, VA, VB, VC >, Gecode::Int::Arithmetic::MultDom< View >, Gecode::Int::Arithmetic::DivPlusBnd< Val, VA, VB, VC >, Gecode::Int::Arithmetic::DivBnd< View >, Gecode::Int::Arithmetic::DivMod< View >, Gecode::Int::BinPacking::Pack, Gecode::Int::Bool::OrTrueSubsumed< BV >, Gecode::Int::Bool::Eq< BVA, BVB >, Gecode::Int::Bool::NaryEq< BV >, Gecode::Int::Bool::Lq< BV >, Gecode::Int::Bool::NaryLq< VX >, Gecode::Int::Bool::BinOrTrue< BVA, BVB >, Gecode::Int::Bool::TerOrTrue< BV >, Gecode::Int::Bool::QuadOrTrue< BV >, Gecode::Int::Bool::Or< BVA, BVB, BVC >, Gecode::Int::Bool::NaryOr< VX, VY >, Gecode::Int::Bool::NaryOrTrue< BV >, Gecode::Int::Bool::Eqv< BVA, BVB, BVC >, Gecode::Int::Bool::NaryEqv, Gecode::Int::Bool::Clause< VX, VY >, Gecode::Int::Bool::ClauseTrue< VX, VY >, Gecode::Int::Channel::Val< View, Offset, shared >, Gecode::Int::Channel::Dom< View, Offset, shared >, Gecode::Int::Channel::LinkSingle, Gecode::Int::Channel::LinkMulti, Gecode::Int::Circuit::Val< View, Offset >, Gecode::Int::Circuit::Dom< View, Offset >, Gecode::Int::Count::EqInt< VX, VY >, Gecode::Int::Count::GqInt< VX, VY >, Gecode::Int::Count::LqInt< VX, VY >, Gecode::Int::Count::EqView< VX, VY, VZ, shr, dom >, Gecode::Int::Count::LqView< VX, VY, VZ, shr >, Gecode::Int::Count::GqView< VX, VY, VZ, shr, dom >, Gecode::Int::Cumulative::ManProp< ManTask, Cap >, Gecode::Int::Cumulative::OptProp< OptTask, Cap >, Gecode::Int::Cumulatives::Val< ViewM, ViewP, ViewU, View >, Gecode::Int::Distinct::Val< View >, Gecode::Int::Distinct::Bnd< View >, Gecode::Int::Distinct::Dom< View >, Gecode::Int::Distinct::TerDom< View >, Gecode::Int::Dom::ReRange< View >, Gecode::Int::Dom::ReIntSet< View >, Gecode::Int::Element::Int< V0, V1, Idx, Val >, Gecode::Int::Element::ViewBnd< VA, VB, VC >, Gecode::Int::Element::ViewDom< VA, VB, VC >, Gecode::Int::Element::Pair, Gecode::Int::Exec::When, Gecode::Int::Extensional::LayeredGraph< View, Val, Degree, StateIdx >, Gecode::Int::Extensional::Basic< View, shared >, Gecode::Int::Extensional::Incremental< View >, Gecode::Int::GCC::Val< Card >, Gecode::Int::GCC::Bnd< Card >, Gecode::Int::GCC::Dom< Card >, Gecode::Int::Linear::EqBin< Val, A, B >, Gecode::Int::Linear::ReEqBin< Val, A, B, Ctrl >, Gecode::Int::Linear::NqBin< Val, A, B >, Gecode::Int::Linear::LqBin< Val, A, B >, Gecode::Int::Linear::GqBin< Val, A, B >, Gecode::Int::Linear::ReLqBin< Val, A, B >, Gecode::Int::Linear::EqTer< Val, A, B, C >, Gecode::Int::Linear::NqTer< Val, A, B, C >, Gecode::Int::Linear::LqTer< Val, A, B, C >, Gecode::Int::Linear::Eq< Val, P, N >, Gecode::Int::Linear::DomEq< Val, View >, Gecode::Int::Linear::ReEq< Val, P, N, Ctrl >, Gecode::Int::Linear::Nq< Val, P, N >, Gecode::Int::Linear::Lq< Val, P, N >, Gecode::Int::Linear::ReLq< Val, P, N >, Gecode::Int::Linear::EqBoolInt< VX >, Gecode::Int::Linear::GqBoolInt< VX >, Gecode::Int::Linear::NqBoolInt< VX >, Gecode::Int::Linear::ReGqBoolInt< VX, VB >, Gecode::Int::Linear::ReEqBoolInt< VX, VB >, Gecode::Int::Linear::EqBoolView< XV, YV >, Gecode::Int::Linear::NqBoolView< XV, YV >, Gecode::Int::Linear::GqBoolView< XV, YV >, Gecode::Int::Linear::EqBoolScale< SBAP, SBAN, VX >, Gecode::Int::Linear::LqBoolScale< SBAP, SBAN, VX >, Gecode::Int::Linear::NqBoolScale< SBAP, SBAN, VX >, Gecode::Int::Member::Prop< View >, Gecode::Int::Member::ReProp< View >, Gecode::Int::NoOverlap::ManProp< Dim, d >, Gecode::Int::NoOverlap::OptProp< Dim, d >, Gecode::Int::NValues::EqInt< VY >, Gecode::Int::NValues::LqInt< VY >, Gecode::Int::NValues::GqInt< VY >, Gecode::Int::NValues::EqBool< VY >, Gecode::Int::NValues::LqBool< VY >, Gecode::Int::NValues::GqBool< VY >, Gecode::Int::Precede::Single< View >, Gecode::Int::Rel::EqDom< View0, View1 >, Gecode::Int::Rel::EqBnd< View0, View1 >, Gecode::Int::Rel::NaryEqDom< View >, Gecode::Int::Rel::NaryEqBnd< View >, Gecode::Int::Rel::NaryLqLe< View, o >, Gecode::Int::Rel::NaryNq< View >, Gecode::Int::Rel::ReEqDom< View, CtrlView >, Gecode::Int::Rel::ReEqBnd< View, CtrlView >, Gecode::Int::Rel::ReEqDomInt< View, CtrlView >, Gecode::Int::Rel::ReEqBndInt< View, CtrlView >, Gecode::Int::Rel::Nq< View >, Gecode::Int::Rel::Lq< View >, Gecode::Int::Rel::Le< View >, Gecode::Int::Rel::ReLq< View, CtrlView >, Gecode::Int::Rel::ReLqInt< View, CtrlView >, Gecode::Int::Rel::LexLqLe< View >, Gecode::Int::Rel::LexNq< View >, Gecode::Int::Sequence::Sequence< View, Val >, Gecode::Int::Sorted::Sorted< View, Perm >, Gecode::Int::Unary::ManProp< ManTask >, Gecode::Int::Unary::OptProp< OptTask >, Gecode::Kernel::UnaryWait< View >, Gecode::Kernel::NaryWait< View >, Gecode::Set::Convex::Convex, Gecode::Set::Convex::ConvexHull, Gecode::Set::Distinct::AtmostOne, Gecode::Set::Element::ElementIntersection< View, View0, View1 >, Gecode::Set::Element::ElementUnion< View, View0, View1 >, Gecode::Set::Element::ElementUnionConst< SView, RView >, Gecode::Set::Element::ElementDisjoint< SView, RView >, Gecode::Set::Int::MinElement< View >, Gecode::Set::Int::NotMinElement< View >, Gecode::Set::Int::ReMinElement< View >, Gecode::Set::Int::MaxElement< View >, Gecode::Set::Int::NotMaxElement< View >, Gecode::Set::Int::ReMaxElement< View >, Gecode::Set::Int::Card< View >, Gecode::Set::Int::Match< View >, Gecode::Set::Int::ChannelInt< View >, Gecode::Set::Int::ChannelBool< View >, Gecode::Set::Int::Weights< View >, Gecode::Set::Precede::Single< View >, Gecode::Set::RelOp::SuperOfInter< View0, View1, View2 >, Gecode::Set::RelOp::SubOfUnion< View0, View1, View2 >, Gecode::Set::RelOp::Intersection< View0, View1, View2 >, Gecode::Set::RelOp::Union< View0, View1, View2 >, Gecode::Set::RelOp::IntersectionN< View0, View1 >, Gecode::Set::RelOp::UnionN< View0, View1 >, Gecode::Set::RelOp::PartitionN< View0, View1 >, Gecode::Set::Rel::Subset< View0, View1 >, Gecode::Set::Rel::NoSubset< View0, View1 >, Gecode::Set::Rel::ReSubset< View0, View1 >, Gecode::Set::Rel::Eq< View0, View1 >, Gecode::Set::Rel::ReEq< View0, View1 >, Gecode::Set::Rel::Lq< View0, View1, strict >, Gecode::Set::Rel::ReLq< View0, View1, strict >, Gecode::Set::Rel::Distinct< View0, View1 >, Gecode::Set::Rel::DistinctDoit< View0 >, Gecode::Set::Sequence::Seq, and Gecode::Set::Sequence::SeqU.

virtual PropCost Gecode::Propagator::cost ( const Space &  home,
const ModEventDelta &  med 
) const [pure virtual]

Cost function.

Implemented in Gecode::Int::Arithmetic::AbsBnd< View >, Gecode::Int::Arithmetic::AbsDom< View >, Gecode::Int::Arithmetic::MaxDom< View >, Gecode::Int::Arithmetic::NaryMaxDom< View >, Gecode::Int::Arithmetic::SqrPlusDom< VA, VB >, Gecode::Int::Arithmetic::SqrDom< View >, Gecode::Int::Arithmetic::SqrtDom< View >, Gecode::Int::Arithmetic::MultPlusDom< Val, VA, VB, VC >, Gecode::Int::Arithmetic::MultDom< View >, Gecode::Int::BinPacking::Pack, Gecode::Int::Bool::BoolBinary< BVA, BVB >, Gecode::Int::Bool::BoolTernary< BVA, BVB, BVC >, Gecode::Int::Bool::NaryEq< BV >, Gecode::Int::Bool::NaryLq< VX >, Gecode::Int::Bool::NaryOr< VX, VY >, Gecode::Int::Bool::NaryOrTrue< BV >, Gecode::Int::Bool::NaryEqv, Gecode::Int::Bool::Clause< VX, VY >, Gecode::Int::Bool::ClauseTrue< VX, VY >, Gecode::Int::Channel::Base< Info, Offset, pc >, Gecode::Int::Channel::Dom< View, Offset, shared >, Gecode::Int::Channel::LinkSingle, Gecode::Int::Channel::LinkMulti, Gecode::Int::Circuit::Val< View, Offset >, Gecode::Int::Circuit::Dom< View, Offset >, Gecode::Int::Count::IntBase< VX, VY >, Gecode::Int::Count::ViewBase< VX, VY, VZ >, Gecode::Int::Cumulatives::Val< ViewM, ViewP, ViewU, View >, Gecode::Int::Distinct::Bnd< View >, Gecode::Int::Distinct::Dom< View >, Gecode::Int::Element::Int< V0, V1, Idx, Val >, Gecode::Int::Element::View< VA, VB, VC, pc_ac >, Gecode::Int::Element::ViewDom< VA, VB, VC >, Gecode::Int::Extensional::LayeredGraph< View, Val, Degree, StateIdx >, Gecode::Int::Extensional::Base< View, subscribe >, Gecode::Int::Extensional::Basic< View, shared >, Gecode::Int::Extensional::Incremental< View >, Gecode::Int::GCC::Val< Card >, Gecode::Int::GCC::Bnd< Card >, Gecode::Int::GCC::Dom< Card >, Gecode::Int::Linear::LinBin< Val, A, B, pc >, Gecode::Int::Linear::ReLinBin< Val, A, B, pc, Ctrl >, Gecode::Int::Linear::NqBin< Val, A, B >, Gecode::Int::Linear::LinTer< Val, A, B, C, pc >, Gecode::Int::Linear::Lin< Val, P, N, pc >, Gecode::Int::Linear::DomEq< Val, View >, Gecode::Int::Linear::LinBoolInt< VX >, Gecode::Int::Linear::NqBoolInt< VX >, Gecode::Int::Linear::ReLinBoolInt< VX, VB >, Gecode::Int::Linear::LinBoolView< XV, YV >, Gecode::Int::Linear::LinBoolScale< SBAP, SBAN, VX, pcx >, Gecode::Int::Member::Prop< View >, Gecode::Int::NoOverlap::Base< Box >, Gecode::Int::NValues::IntBase< VY >, Gecode::Int::NValues::BoolBase< VY >, Gecode::Int::Precede::Single< View >, Gecode::Int::ReUnaryPropagator< View, pc, CtrlView >, Gecode::Int::ReBinaryPropagator< View, pc, CtrlView >, Gecode::Int::ReMixBinaryPropagator< View0, pc0, View1, pc1, CtrlView >, Gecode::Int::Rel::EqDom< View0, View1 >, Gecode::Int::Rel::NaryEqDom< View >, Gecode::Int::Rel::NaryEqBnd< View >, Gecode::Int::Rel::NaryLqLe< View, o >, Gecode::Int::Rel::NaryNq< View >, Gecode::Int::Rel::Nq< View >, Gecode::Int::Rel::LexLqLe< View >, Gecode::Int::Rel::LexNq< View >, Gecode::Int::Sequence::Sequence< View, Val >, Gecode::Int::Sorted::Sorted< View, Perm >, Gecode::Int::TaskProp< Task, pc >, Gecode::UnaryPropagator< View, pc >, Gecode::BinaryPropagator< View, pc >, Gecode::TernaryPropagator< View, pc >, Gecode::NaryPropagator< View, pc >, Gecode::NaryOnePropagator< View, pc >, Gecode::MixBinaryPropagator< View0, pc0, View1, pc1 >, Gecode::MixTernaryPropagator< View0, pc0, View1, pc1, View2, pc2 >, Gecode::MixNaryOnePropagator< View0, pc0, View1, pc1 >, Gecode::Kernel::UnaryWait< View >, Gecode::Kernel::NaryWait< View >, Gecode::Set::Element::ElementIntersection< View, View0, View1 >, Gecode::Set::Element::ElementUnion< View, View0, View1 >, Gecode::Set::Element::ElementUnionConst< SView, RView >, Gecode::Set::Element::ElementDisjoint< SView, RView >, Gecode::Set::Int::Match< View >, Gecode::Set::Int::ChannelInt< View >, Gecode::Set::Int::ChannelBool< View >, Gecode::Set::Int::Weights< View >, Gecode::Set::Precede::Single< View >, Gecode::Set::RelOp::IntersectionN< View0, View1 >, Gecode::Set::RelOp::UnionN< View0, View1 >, Gecode::Set::RelOp::PartitionN< View0, View1 >, Gecode::Set::Rel::ReSubset< View0, View1 >, Gecode::Set::Rel::ReEq< View0, View1 >, Gecode::Set::Rel::ReLq< View0, View1, strict >, Gecode::Int::Bool::BoolBinary< BV, BV >, Gecode::Int::Channel::Base< DomInfo< View, Offset >, Offset, PC_INT_DOM >, Gecode::Int::Channel::Base< ValInfo< View >, Offset, PC_INT_VAL >, Gecode::Int::Element::View< VA, VB, VC, PC_INT_DOM >, Gecode::Int::Element::View< VA, VB, VC, PC_INT_BND >, Gecode::Int::Extensional::Base< View, false >, Gecode::Int::Extensional::Base< View >, Gecode::Int::Linear::LinBin< Val, A, B, PC_INT_BND >, Gecode::Int::Linear::LinBin< Val, A, B, PC_INT_VAL >, Gecode::Int::Linear::ReLinBin< Val, A, B, PC_INT_BND, Ctrl >, Gecode::Int::Linear::ReLinBin< Val, A, B, PC_INT_BND, BoolView >, Gecode::Int::Linear::LinTer< Val, A, B, C, PC_INT_BND >, Gecode::Int::Linear::LinTer< Val, A, B, C, PC_INT_VAL >, Gecode::Int::Linear::Lin< Val, View, View, PC_INT_DOM >, Gecode::Int::Linear::Lin< Val, P, N, PC_INT_VAL >, Gecode::Int::Linear::Lin< Val, P, N, PC_INT_BND >, Gecode::Int::Linear::LinBoolScale< SBAP, SBAN, VX, PC_INT_VAL >, Gecode::Int::Linear::LinBoolScale< SBAP, SBAN, VX, PC_INT_BND >, Gecode::Int::NoOverlap::Base< ManBox< Dim, d > >, Gecode::Int::NoOverlap::Base< OptBox< Dim, d > >, Gecode::Int::ReUnaryPropagator< View, PC_INT_DOM, CtrlView >, Gecode::Int::ReUnaryPropagator< View, PC_INT_BND, CtrlView >, Gecode::Int::ReUnaryPropagator< View, PC_INT_BND, BoolView >, Gecode::Int::ReUnaryPropagator< View, PC_INT_DOM, BoolView >, Gecode::Int::ReBinaryPropagator< View, PC_INT_DOM, CtrlView >, Gecode::Int::ReBinaryPropagator< View, PC_INT_BND, CtrlView >, Gecode::Int::ReMixBinaryPropagator< View, PC_SET_ANY, Gecode::Int::IntView, Gecode::Int::PC_INT_DOM, Gecode::Int::BoolView >, Gecode::Int::TaskProp< ManTask, Int::PC_INT_DOM >, Gecode::Int::TaskProp< OptTask, Int::PC_INT_BND >, Gecode::Int::TaskProp< ManTask, Int::PC_INT_BND >, Gecode::Int::TaskProp< OptTask, Int::PC_INT_DOM >, Gecode::UnaryPropagator< View0, PC_SET_ANY >, Gecode::UnaryPropagator< BoolView, PC_BOOL_VAL >, Gecode::UnaryPropagator< SetView, PC_SET_ANY >, Gecode::BinaryPropagator< VX, PC_INT_VAL >, Gecode::BinaryPropagator< View, PC_INT_DOM >, Gecode::BinaryPropagator< View, PC_INT_VAL >, Gecode::BinaryPropagator< View, PC_INT_BND >, Gecode::BinaryPropagator< BoolView, PC_BOOL_VAL >, Gecode::BinaryPropagator< SetView, PC_SET_ANY >, Gecode::BinaryPropagator< BV, PC_BOOL_VAL >, Gecode::TernaryPropagator< IntView, PC_INT_DOM >, Gecode::TernaryPropagator< View, PC_INT_DOM >, Gecode::TernaryPropagator< View, PC_INT_BND >, Gecode::NaryPropagator< VX, PC_BOOL_NONE >, Gecode::NaryPropagator< View, PC_INT_DOM >, Gecode::NaryPropagator< View, PC_INT_VAL >, Gecode::NaryPropagator< View, Int::PC_INT_DOM >, Gecode::NaryPropagator< View, PC_INT_BND >, Gecode::NaryPropagator< View, PC_INT_NONE >, Gecode::NaryPropagator< SetView, PC_SET_ANY >, Gecode::NaryPropagator< View, PC_SET_NONE >, Gecode::NaryPropagator< BV, PC_BOOL_VAL >, Gecode::NaryOnePropagator< View, PC_INT_DOM >, Gecode::NaryOnePropagator< View, PC_INT_BND >, Gecode::NaryOnePropagator< SetView, PC_SET_ANY >, Gecode::MixBinaryPropagator< View, PC_SET_ANY, Gecode::Int::IntView, Gecode::Int::PC_INT_BND >, Gecode::MixBinaryPropagator< VA, PC_INT_DOM, VB, PC_INT_DOM >, Gecode::MixBinaryPropagator< VA, PC_INT_BND, VB, PC_INT_BND >, Gecode::MixBinaryPropagator< View0, PC_SET_CGLB, View1, PC_SET_CLUB >, Gecode::MixBinaryPropagator< View0, PC_SET_VAL, View1, PC_SET_VAL >, Gecode::MixBinaryPropagator< View, PC_SET_ANY, Gecode::Int::IntView, Gecode::Int::PC_INT_DOM >, Gecode::MixBinaryPropagator< View0, PC_INT_DOM, View1, PC_INT_DOM >, Gecode::MixBinaryPropagator< VX, PC_BOOL_VAL, VY, PC_BOOL_VAL >, Gecode::MixBinaryPropagator< View0, PC_INT_BND, View1, PC_INT_BND >, Gecode::MixBinaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY >, Gecode::MixBinaryPropagator< View0, PC_SET_CLUB, View1, PC_SET_CGLB >, Gecode::MixBinaryPropagator< View, PC_SET_CARD, Gecode::Int::IntView, Gecode::Int::PC_INT_BND >, Gecode::MixBinaryPropagator< BoolView, PC_BOOL_VAL, IntView, PC_INT_VAL >, Gecode::MixTernaryPropagator< VA, PC_INT_BND, VB, PC_INT_BND, VC, PC_INT_BND >, Gecode::MixTernaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY, View2, PC_SET_CLUB >, Gecode::MixTernaryPropagator< VA, PC_INT_DOM, VB, PC_INT_DOM, VC, PC_INT_DOM >, Gecode::MixTernaryPropagator< View0, PC_SET_ANY, View1, PC_SET_ANY, View2, PC_SET_ANY >, Gecode::MixNaryOnePropagator< BoolView, PC_BOOL_NONE, IntView, PC_INT_DOM >, Gecode::MixNaryOnePropagator< IntView, PC_INT_DOM, VY, PC_INT_BND >, Gecode::MixNaryOnePropagator< VX, PC_BOOL_NONE, VY, PC_BOOL_VAL >, Gecode::MixNaryOnePropagator< View0, PC_SET_ANY, View1, PC_SET_ANY >, and Gecode::MixNaryOnePropagator< Gecode::Int::BoolView, Gecode::Int::PC_BOOL_VAL, View, PC_GEN_NONE >.

ModEventDelta Gecode::Propagator::modeventdelta ( void   )  const [inline]

Return the modification event delta.

This function returns the modification event delta of the currently executing propagator and hence can only be called within the propagate function of a propagator.

Definition at line 2548 of file core.hpp.

ExecStatus Gecode::Propagator::advise ( Space &  home,
Advisor &  a,
const Delta &  d 
) [virtual]

Advise function.

The advisor is passed as argument a.

A propagator must specialize this advise function, if it uses advisors. The advise function must return an execution status as follows:

  • ES_FAILED: the advisor has detected failure.
  • ES_FIX: the advisor's propagator (that is, this propagator) does not need to be run.
  • ES_NOFIX: the advisor's propagator (that is, this propagator) must be run.
  • ES_NOFIX_FORCE: the advisor's propagator (that is, this propagator) must be run and it must forcefully be rescheduled (including recomputation of cost).

Apart from the above values, an advisor can return the result from calling the function defined by a space:

  • ES_FIX_DISPOSE: the advisor's propagator does not need to be run and the advisor will be disposed.
  • ES_NOFIX_DISPOSE: the advisor's propagator must be run and the advisor will be disposed.
  • ES_NOFIX_FORCE_DISPOSE: the advisor's propagator must be run , it must forcefully be rescheduled (including recomputation of cost), and the adviser will be disposed. For more details, see the function documentation.

The delta d describes how the variable has been changed by an operation on the advisor's variable. Typically, the delta information can only be utilized by either static or member functions of views as the actual delta information is both domain and view dependent.

Reimplemented in Gecode::Int::Bool::NaryLq< VX >, Gecode::Int::Bool::NaryOr< VX, VY >, Gecode::Int::Bool::Clause< VX, VY >, Gecode::Int::Channel::LinkMulti, Gecode::Int::Extensional::LayeredGraph< View, Val, Degree, StateIdx >, Gecode::Int::Extensional::Incremental< View >, Gecode::Int::Linear::EqBoolInt< VX >, Gecode::Int::Linear::GqBoolInt< VX >, Gecode::Int::Linear::ReGqBoolInt< VX, VB >, Gecode::Int::Linear::ReEqBoolInt< VX, VB >, Gecode::Int::NValues::BoolBase< VY >, Gecode::Int::Precede::Single< View >, Gecode::Int::Rel::NaryLqLe< View, o >, Gecode::Int::Sequence::Sequence< View, Val >, Gecode::Set::Int::ChannelBool< View >, and Gecode::Set::Precede::Single< View >.

Definition at line 74 of file core.cpp.

double Gecode::Propagator::afc ( void   )  const [inline]

Return the accumlated failure count.

Definition at line 2553 of file core.hpp.

Member Data Documentation

ModEventDelta Gecode::Propagator::med

A set of modification events (used during propagation).

Definition at line 758 of file core.hpp.

size_t Gecode::Propagator::size

The size of the propagator (used during subsumption).

Definition at line 760 of file core.hpp.

Gecode::ActorLink* Gecode::Propagator::advisors

A list of advisors (used during cloning).

Definition at line 762 of file core.hpp.

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