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action.cpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2012
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37 
38 #include <gecode/kernel.hh>
39 
40 namespace Gecode {
41 
42  Support::Mutex Action::Storage::m;
43 
45  heap.free<double>(a,n);
46  }
47 
48  const Action Action::def;
49 
51  : SharedHandle(a) {}
52 
53  Action&
55  (void) SharedHandle::operator =(a);
56  return *this;
57  }
58 
59  Action::~Action(void) {}
60 
61  void
62  Action::decay(Space&, double d) {
63  if ((d < 0.0) || (d > 1.0))
64  throw IllegalDecay("Action");
65  acquire();
66  object().invd = 1.0 / d;
67  release();
68  }
69 
70  double
71  Action::decay(const Space&) const {
72  double d;
73  const_cast<Action*>(this)->acquire();
74  d = 1.0 / object().invd;
75  const_cast<Action*>(this)->release();
76  return d;
77  }
78 
79 }
80 
81 // STATISTICS: kernel-branch
double * a
Action values (more follow)
Definition: action.hpp:60
The shared handle.
Action(void)
Construct as not yet intialized.
Definition: action.hpp:327
~Action(void)
Destructor.
Definition: action.cpp:59
Storage & object(void) const
Return object of correct type.
Definition: action.hpp:294
void acquire(void)
Acquire mutex.
Definition: action.hpp:317
void release(void)
Release mutex.
Definition: action.hpp:321
Computation spaces.
Definition: core.hpp:1668
Gecode::IntSet d(v, 7)
static Support::Mutex m
Mutex to synchronize globally shared access.
Definition: action.hpp:54
int n
Number of action values.
Definition: action.hpp:56
void decay(Space &home, double d)
Set decay factor to d.
Definition: action.cpp:62
double invd
Inverse decay factor.
Definition: action.hpp:58
~Storage(void)
Delete object.
Definition: action.cpp:44
void free(T *b, long unsigned int n)
Delete n objects starting at b.
Definition: heap.hpp:461
struct Gecode::@585::NNF::@62::@64 a
For atomic nodes.
Heap heap
The single global heap.
Definition: heap.cpp:48
Action & operator=(const Action &a)
Assignment operator.
Definition: action.cpp:54
static const Action def
Default (empty) action information.
Definition: action.hpp:107
Gecode toplevel namespace
Class for action management.
Definition: action.hpp:46
Exception: illegal decay factor
Definition: exception.hpp:111