Gecode::Search::Seq::Path< Tracer > Class Template Reference
Depth-first path (stack of edges) supporting recomputation. More...
#include <path.hh>
List of all members.
Classes | |
| class | Edge |
| Search tree edge for recomputation More... | |
Public Types | |
| typedef Tracer::ID | ID |
| Node identity type. | |
Public Member Functions | |
| Path (unsigned int l) | |
| Initialize with no-good depth limit l. | |
| unsigned int | ngdl (void) const |
| Return no-good depth limit. | |
| void | ngdl (unsigned int l) |
| Set no-good depth limit to l. | |
| const Choice * | push (Worker &stat, Space *s, Space *c, unsigned int nid) |
| Push space c (a clone of s or NULL). | |
| void | next (void) |
| Generate path for next node. | |
| Edge & | top (void) const |
| Provide access to topmost edge. | |
| bool | empty (void) const |
| Test whether path is empty. | |
| int | lc (void) const |
| Return position on stack of last copy. | |
| void | unwind (int l, Tracer &t) |
| Unwind the stack up to position l (after failure). | |
| void | commit (Space *s, int i) const |
| Commit space s as described by stack entry at position i. | |
| Space * | recompute (unsigned int &d, unsigned int a_d, Worker &s, Tracer &t) |
| Recompute space according to path. | |
| Space * | recompute (unsigned int &d, unsigned int a_d, Worker &s, const Space &best, int &mark, Tracer &t) |
| Recompute space according to path. | |
| int | entries (void) const |
| Return number of entries on stack. | |
| void | reset (void) |
| Reset stack. | |
| virtual void | post (Space &home) const |
| Post no-goods. | |
Protected Attributes | |
| Support::DynamicStack< Edge, Heap > | ds |
| Stack to store edge information. | |
| unsigned int | _ngdl |
| Depth limit for no-good generation. | |
Detailed Description
template<class Tracer>
class Gecode::Search::Seq::Path< Tracer >
Depth-first path (stack of edges) supporting recomputation.
Maintains the invariant that it contains the path of the space being currently explored. This is required to support recomputation, of course.
The path supports adaptive recomputation controlled by the value of a_d: only if the recomputation distance is at least this large, an additional clone is created.
Definition at line 60 of file path.hh.
Member Typedef Documentation
| typedef Tracer::ID Gecode::Search::Seq::Path< Tracer >::ID |
Node identity type.
Definition at line 64 of file path.hh.
Constructor & Destructor Documentation
| Gecode::Search::Seq::Path< Tracer >::Path | ( | unsigned int | l | ) | [inline] |
Initialize with no-good depth limit l.
Definition at line 119 of file path.hpp.
Member Function Documentation
| unsigned int Gecode::Search::Seq::Path< Tracer >::ngdl | ( | void | ) | const [inline] |
Return no-good depth limit.
Definition at line 124 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::ngdl | ( | unsigned int | l | ) | [inline] |
Set no-good depth limit to l.
Definition at line 130 of file path.hpp.
| const Choice * Gecode::Search::Seq::Path< Tracer >::push | ( | Worker & | stat, | |
| Space * | s, | |||
| Space * | c, | |||
| unsigned int | nid | |||
| ) | [inline] |
Push space c (a clone of s or NULL).
Definition at line 136 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::next | ( | void | ) | [inline] |
Generate path for next node.
Definition at line 149 of file path.hpp.
| Path< Tracer >::Edge & Gecode::Search::Seq::Path< Tracer >::top | ( | void | ) | const [inline] |
Provide access to topmost edge.
Definition at line 161 of file path.hpp.
| bool Gecode::Search::Seq::Path< Tracer >::empty | ( | void | ) | const [inline] |
Test whether path is empty.
Definition at line 168 of file path.hpp.
| int Gecode::Search::Seq::Path< Tracer >::lc | ( | void | ) | const [inline] |
Return position on stack of last copy.
Definition at line 181 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::unwind | ( | int | l, | |
| Tracer & | t | |||
| ) | [inline] |
Unwind the stack up to position l (after failure).
Definition at line 196 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::commit | ( | Space * | s, | |
| int | i | |||
| ) | const [inline] |
Commit space s as described by stack entry at position i.
Definition at line 174 of file path.hpp.
| Space * Gecode::Search::Seq::Path< Tracer >::recompute | ( | unsigned int & | d, | |
| unsigned int | a_d, | |||
| Worker & | s, | |||
| Tracer & | t | |||
| ) | [inline] |
Recompute space according to path.
Definition at line 225 of file path.hpp.
| Space * Gecode::Search::Seq::Path< Tracer >::recompute | ( | unsigned int & | d, | |
| unsigned int | a_d, | |||
| Worker & | s, | |||
| const Space & | best, | |||
| int & | mark, | |||
| Tracer & | t | |||
| ) | [inline] |
Recompute space according to path.
Definition at line 291 of file path.hpp.
| int Gecode::Search::Seq::Path< Tracer >::entries | ( | void | ) | const [inline] |
Return number of entries on stack.
Definition at line 190 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::reset | ( | void | ) | [inline] |
Reset stack.
Definition at line 218 of file path.hpp.
| void Gecode::Search::Seq::Path< Tracer >::post | ( | Space & | home | ) | const [inline, virtual] |
Member Data Documentation
Support::DynamicStack<Edge,Heap> Gecode::Search::Seq::Path< Tracer >::ds [protected] |
Stack to store edge information.
Definition at line 111 of file path.hh.
unsigned int Gecode::Search::Seq::Path< Tracer >::_ngdl [protected] |
Depth limit for no-good generation.
Definition at line 113 of file path.hh.
The documentation for this class was generated from the following files:
- gecode/search/seq/path.hh
- gecode/search/seq/path.hpp