Generated on Fri Oct 19 11:25:50 2018 for Gecode by doxygen 1.6.3

Gecode::Space Class Reference

Computation spaces. More...

#include <core.hpp>

List of all members.

Classes

class  Branchers
 Class to iterate over branchers of a space. More...
class  IdlePropagators
 Class to iterate over idle propagators of a space. More...
class  Propagators
 Class to iterate over propagators of a space. More...
class  ScheduledPropagators
 Class to iterate over scheduled propagators of a space. More...

Public Member Functions

 Space (void)
 Default constructor.
 Space (Space &s)
 Constructor for cloning.
virtual ~Space (void)
 Destructor.
virtual Spacecopy (void)=0
 Copying member function.
virtual void constrain (const Space &best)
 Constrain function for best solution search.
virtual bool master (const MetaInfo &mi)
 Master configuration function for meta search engines.
virtual bool slave (const MetaInfo &mi)
 Slave configuration function for meta search engines.
SpaceStatus status (StatusStatistics &stat=unused_status)
 Query space status.
const Choicechoice (void)
 Create new choice for current brancher.
const Choicechoice (Archive &e) const
 Create new choice from e.
Spaceclone (CloneStatistics &stat=unused_clone) const
 Clone space.
void commit (const Choice &c, unsigned int a, CommitStatistics &stat=unused_commit)
 Commit choice c for alternative a.
void trycommit (const Choice &c, unsigned int a, CommitStatistics &stat=unused_commit)
 If possible, commit choice c for alternative a.
NGLngl (const Choice &c, unsigned int a)
 Create no-good literal for choice c and alternative a.
void print (const Choice &c, unsigned int a, std::ostream &o) const
 Print branch for choice c and alternative a.
void notice (Actor &a, ActorProperty p, bool duplicate=false)
 Notice actor property.
void ignore (Actor &a, ActorProperty p, bool duplicate=false)
 Ignore actor property.
ExecStatus ES_SUBSUMED (Propagator &p)
ExecStatus ES_SUBSUMED_DISPOSED (Propagator &p, size_t s)
 Propagator p is subsumed
ExecStatus ES_FIX_PARTIAL (Propagator &p, const ModEventDelta &med)
 Propagator p has computed partial fixpoint
ExecStatus ES_NOFIX_PARTIAL (Propagator &p, const ModEventDelta &med)
 Propagator p has not computed partial fixpoint
template<class A >
ExecStatus ES_FIX_DISPOSE (Council< A > &c, A &a)
 Advisor a must be disposed
template<class A >
ExecStatus ES_NOFIX_DISPOSE (Council< A > &c, A &a)
 Advisor a must be disposed and its propagator must be run
template<class A >
ExecStatus ES_NOFIX_DISPOSE_FORCE (Council< A > &c, A &a)
 Advisor a must be disposed and its propagator must be forcefully rescheduled
void fail (void)
 Fail space.
bool failed (void) const
 Check whether space is failed.
bool stable (void) const
 Return if space is stable (at fixpoint or failed).
template<class T >
T * alloc (long unsigned int n)
 Allocate block of n objects of type T from space heap.
template<class T >
T * alloc (long int n)
 Allocate block of n objects of type T from space heap.
template<class T >
T * alloc (unsigned int n)
 Allocate block of n objects of type T from space heap.
template<class T >
T * alloc (int n)
 Allocate block of n objects of type T from space heap.
template<class T >
void free (T *b, long unsigned int n)
 Delete n objects allocated from space heap starting at b.
template<class T >
void free (T *b, long int n)
 Delete n objects allocated from space heap starting at b.
template<class T >
void free (T *b, unsigned int n)
 Delete n objects allocated from space heap starting at b.
template<class T >
void free (T *b, int n)
 Delete n objects allocated from space heap starting at b.
template<class T >
T * realloc (T *b, long unsigned int n, long unsigned int m)
 Reallocate block of n objects starting at b to m objects of type T from the space heap.
template<class T >
T * realloc (T *b, long int n, long int m)
 Reallocate block of n objects starting at b to m objects of type T from the space heap.
template<class T >
T * realloc (T *b, unsigned int n, unsigned int m)
 Reallocate block of n objects starting at b to m objects of type T from the space heap.
template<class T >
T * realloc (T *b, int n, int m)
 Reallocate block of n objects starting at b to m objects of type T from the space heap.
template<class T >
T ** realloc (T **b, long unsigned int n, long unsigned int m)
 Reallocate block of n pointers starting at b to m objects of type T* from the space heap.
template<class T >
T ** realloc (T **b, long int n, long int m)
 Reallocate block of n pointers starting at b to m objects of type T* from the space heap.
template<class T >
T ** realloc (T **b, unsigned int n, unsigned int m)
 Reallocate block of n pointers starting at b to m objects of type T* from the space heap.
template<class T >
T ** realloc (T **b, int n, int m)
 Reallocate block of n pointers starting at b to m objects of type T* from the space heap.
void * ralloc (size_t s)
 Allocate memory on space heap.
void rfree (void *p, size_t s)
 Free memory previously allocated with alloc (might be reused later).
void * rrealloc (void *b, size_t n, size_t m)
 Reallocate memory block starting at b from size n to size s.
template<size_t >
void * fl_alloc (void)
 Allocate from freelist-managed memory.
template<size_t >
void fl_dispose (FreeList *f, FreeList *l)
 Return freelist-managed memory to freelist.

Friends

void trace (Home home, TraceFilter tf, int te, Tracer &t)
 Create tracer.

Conversion from Space to Home



Home operator() (Propagator &p)
 Return a home for this space with the information that p is being rewritten.
Home operator() (PropagatorGroup pg)
 Return a home for this space with propagator group information pg.
Home operator() (BrancherGroup bg)
 Return a home for this space with brancher group information bg.



template<class T >
T & construct (void)
 Construction routines.
template<class T , typename A1 >
T & construct (A1 const &a1)
 Constructs a single object of type T from space heap using a unary constructor.
template<class T , typename A1 , typename A2 >
T & construct (A1 const &a1, A2 const &a2)
 Constructs a single object of type T from space heap using a binary constructor.
template<class T , typename A1 , typename A2 , typename A3 >
T & construct (A1 const &a1, A2 const &a2, A3 const &a3)
 Constructs a single object of type T from space heap using a ternary constructor.
template<class T , typename A1 , typename A2 , typename A3 , typename A4 >
T & construct (A1 const &a1, A2 const &a2, A3 const &a3, A4 const &a4)
 Constructs a single object of type T from space heap using a quaternary constructor.
template<class T , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 >
T & construct (A1 const &a1, A2 const &a2, A3 const &a3, A4 const &a4, A5 const &a5)
 Constructs a single object of type T from space heap using a quinary constructor.

Low-level support for AFC



void afc_decay (double d)
 Set AFC decay factor to d
double afc_decay (void) const
 Return AFC decay factor.
void afc_unshare (void)
 Unshare AFC information for all propagators.

Detailed Description

Computation spaces.

Definition at line 1701 of file core.hpp.


Member Function Documentation

Home Gecode::Space::operator() ( Propagator p  )  [inline]

Return a home for this space with the information that p is being rewritten.

Definition at line 3244 of file core.hpp.

Home Gecode::Space::operator() ( PropagatorGroup  pg  )  [inline]

Return a home for this space with propagator group information pg.

Definition at line 3248 of file core.hpp.

Home Gecode::Space::operator() ( BrancherGroup  bg  )  [inline]

Return a home for this space with brancher group information bg.

Definition at line 3252 of file core.hpp.

template<class T >
T & Gecode::Space::construct ( void   )  [inline]

Construction routines.

Constructs a single object of type T from space heap using the default constructor.

Definition at line 5035 of file core.hpp.

template<class T , typename A1 >
T & Gecode::Space::construct ( A1 const &  a1  )  [inline]

Constructs a single object of type T from space heap using a unary constructor.

The parameter is passed as a const reference.

Definition at line 5040 of file core.hpp.

template<class T , typename A1 , typename A2 >
T & Gecode::Space::construct ( A1 const &  a1,
A2 const &  a2 
) [inline]

Constructs a single object of type T from space heap using a binary constructor.

The parameters are passed as const references.

Definition at line 5047 of file core.hpp.

template<class T , typename A1 , typename A2 , typename A3 >
T & Gecode::Space::construct ( A1 const &  a1,
A2 const &  a2,
A3 const &  a3 
) [inline]

Constructs a single object of type T from space heap using a ternary constructor.

The parameters are passed as const references.

Definition at line 5054 of file core.hpp.

template<class T , typename A1 , typename A2 , typename A3 , typename A4 >
T & Gecode::Space::construct ( A1 const &  a1,
A2 const &  a2,
A3 const &  a3,
A4 const &  a4 
) [inline]

Constructs a single object of type T from space heap using a quaternary constructor.

The parameters are passed as const references.

Definition at line 5061 of file core.hpp.

template<class T , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 >
T & Gecode::Space::construct ( A1 const &  a1,
A2 const &  a2,
A3 const &  a3,
A4 const &  a4,
A5 const &  a5 
) [inline]

Constructs a single object of type T from space heap using a quinary constructor.

The parameters are passed as const references.

Definition at line 5068 of file core.hpp.

void Gecode::Space::afc_decay ( double  d  )  [inline]

Set AFC decay factor to d

Definition at line 3204 of file core.hpp.

double Gecode::Space::afc_decay ( void   )  const [inline]

Return AFC decay factor.

Definition at line 3199 of file core.hpp.

void Gecode::Space::afc_unshare ( void   ) 

Unshare AFC information for all propagators.

Definition at line 841 of file core.cpp.


Friends And Related Function Documentation

void trace ( Home  home,
TraceFilter  tf,
int  te,
Tracer t 
) [friend]

Create tracer.


Member Data Documentation

Cost level with next propagator to be executed.

This maintains the following invariant (but only if the space does not perform propagation):

  • If active points to a queue, this queue might contain a propagator. However, there will be at least one queue containing a propagator.
  • Otherwise, active is smaller than the first queue or larger than the last queue. Then, the space is stable.
  • If active is larger than the last queue, the space is failed.

Definition at line 1789 of file core.hpp.

ActorLink Gecode::Space::queue[PropCost::AC_MAX+1]

Scheduled propagators according to cost.

Definition at line 1791 of file core.hpp.

unsigned int Gecode::Space::bid_sc

Id of next brancher to be created plus status control.

The last two bits are reserved for status control.

Definition at line 1798 of file core.hpp.

unsigned int Gecode::Space::n_sub

Number of subscriptions.

Definition at line 1800 of file core.hpp.

View trace information.

Definition at line 1802 of file core.hpp.

struct { ... } Gecode::Space::p

Data only available during propagation or branching.

Entries for updating variables.

Definition at line 1807 of file core.hpp.

Keep variables during copying without index structure.

Definition at line 1809 of file core.hpp.

Linked list of local objects.

Definition at line 1811 of file core.hpp.

struct { ... } Gecode::Space::c

Data available only during copying.


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