Gecode::Int::BinPacking::Pack Class Reference

Bin-packing propagator. More...

#include <bin-packing.hh>

Public Member Functions
template<class SizeSet>
bool	nosum (const SizeSet &s, int a, int b, int &ap, int &bp)
	Detect non-existence of sums in a .. b.
template<class SizeSet>
bool	nosum (const SizeSet &s, int a, int b)
	Detect non-existence of sums in a .. b.
virtual ExecStatus	propagate (Space &home, const ModEventDelta &med)
	Perform propagation.
virtual PropCost	cost (const Space &home, const ModEventDelta &med) const
	Cost function.
virtual void	reschedule (Space &home)
	Schedule function.
virtual Actor *	copy (Space &home)
	Copy propagator during cloning.
virtual size_t	dispose (Space &home)
	Destructor.
ModEventDelta	modeventdelta (void) const
	Return the modification event delta.
virtual ExecStatus	advise (Space &home, Advisor &a, const Delta &d)
	Advise function.
virtual void	advise (Space &home, Advisor &a)
	Run advisor a to be run on failure in failed space.
double	afc (void) const
	Return the accumlated failure count.
unsigned int	id (void) const
	Return propagator id.
PropagatorGroup	group (void) const
	Return group propagator belongs to.
void	group (PropagatorGroup g)
	Add propagator to group g.
bool	disabled (void) const
	Whether propagator is currently disabled.
virtual	~Actor (void)
	To avoid warnings.

Static Public Member Functions
static ExecStatus	post (Home home, ViewArray< OffsetView > &l, ViewArray< Item > &bs)
	Post propagator for loads l and items bs.
static void *	operator new (size_t s, Space &home)
	Allocate memory from space.
static void	operator delete (void *p, Space &home)
	No-op for exceptions.
static void *	operator new (size_t s)
	Not used.
static void	operator delete (void *p)
	Not used.

Protected Member Functions
	Pack (Home home, ViewArray< OffsetView > &l, ViewArray< Item > &bs)
	Constructor for posting.
	Pack (Space &home, Pack &p)
	Constructor for cloning p.
Protected Member Functions inherited from Gecode::Propagator
	Propagator (Home home)
	Constructor for posting.
	Propagator (Space &home, Propagator &p)
	Constructor for cloning p.
Propagator *	fwd (void) const
	Return forwarding pointer during copying.
Kernel::GPI::Info &	gpi (void)
	Provide access to global propagator information.

Protected Attributes
ViewArray< OffsetView >	l
	Views for load of bins.
ViewArray< Item >	bs
	Items with bin and size.
int	t
	Total size of all items.

Detailed Description

Bin-packing propagator.

The algorithm is taken from: Paul Shaw. A Constraint for Bin Packing. CP 2004.

Requires

#include <gecode/int/bin-packing.hh> 

Definition at line 141 of file bin-packing.hh.

Constructor & Destructor Documentation

Pack() [1/2]

Gecode::Int::BinPacking::Pack::Pack ( Home home, ViewArray< OffsetView > & l, ViewArray< Item > & bs )

inlineprotected

Constructor for posting.

Definition at line 150 of file propagate.hpp.

Pack() [2/2]

Gecode::Int::BinPacking::Pack::Pack ( Space & home, Pack & p )

inlineprotected

Constructor for cloning p.

Definition at line 159 of file propagate.hpp.

Member Function Documentation

post()

ExecStatus Gecode::Int::BinPacking::Pack::post ( Home home, ViewArray< OffsetView > & l, ViewArray< Item > & bs )

static

Post propagator for loads l and items bs.

Definition at line 360 of file propagate.cpp.

nosum() [1/2]

template<class SizeSet>

bool Gecode::Int::BinPacking::Pack::nosum ( const SizeSet & s, int a, int b, int & ap, int & bp )

inline

Detect non-existence of sums in a .. b.

Definition at line 175 of file propagate.hpp.

nosum() [2/2]

template<class SizeSet>

bool Gecode::Int::BinPacking::Pack::nosum ( const SizeSet & s, int a, int b )

inline

Detect non-existence of sums in a .. b.

Definition at line 206 of file propagate.hpp.

propagate()

ExecStatus Gecode::Int::BinPacking::Pack::propagate ( Space & home, const ModEventDelta & med )

virtual

Perform propagation.

Implements Gecode::Propagator.

Definition at line 113 of file propagate.cpp.

cost()

PropCost Gecode::Int::BinPacking::Pack::cost ( const Space & home, const ModEventDelta & med ) const

virtual

Cost function.

Implements Gecode::Propagator.

Definition at line 44 of file propagate.cpp.

reschedule()

void Gecode::Int::BinPacking::Pack::reschedule ( Space & home )

virtual

Schedule function.

Implements Gecode::Propagator.

Definition at line 49 of file propagate.cpp.

copy()

Actor * Gecode::Int::BinPacking::Pack::copy ( Space & home )

virtual

Copy propagator during cloning.

Implements Gecode::Actor.

Definition at line 55 of file propagate.cpp.

dispose()

size_t Gecode::Int::BinPacking::Pack::dispose ( Space & home )

inlinevirtual

Destructor.

Reimplemented from Gecode::Actor.

Definition at line 166 of file propagate.hpp.

Member Data Documentation

l

ViewArray<OffsetView> Gecode::Int::BinPacking::Pack::l

protected

Views for load of bins.

Definition at line 144 of file bin-packing.hh.

bs

ViewArray<Item> Gecode::Int::BinPacking::Pack::bs

protected

Items with bin and size.

Definition at line 146 of file bin-packing.hh.

t

int Gecode::Int::BinPacking::Pack::t

protected

Total size of all items.

Definition at line 148 of file bin-packing.hh.

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

• gecode/int/bin-packing.hh
• gecode/int/bin-packing/propagate.cpp
• gecode/int/bin-packing/propagate.hpp