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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2012
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34#include <gecode/kernel.hh>
35
36namespace Gecode {
37
38 Support::Mutex Action::Storage::m;
39
40 Action::Storage::~Storage(void) {
41 heap.free<double>(a,n);
42 }
43
44 const Action Action::def;
45
46 Action::Action(const Action& a)
47 : SharedHandle(a) {}
48
49 Action&
50 Action::operator =(const Action& a) {
51 (void) SharedHandle::operator =(a);
52 return *this;
53 }
54
55 Action::~Action(void) {}
56
57 void
58 Action::decay(Space&, double d) {
59 if ((d < 0.0) || (d > 1.0))
60 throw IllegalDecay("Action");
61 acquire();
62 object().invd = 1.0 / d;
63 release();
64 }
65
66 double
67 Action::decay(const Space&) const {
68 double d;
69 const_cast<Action*>(this)->acquire();
70 d = 1.0 / object().invd;
71 const_cast<Action*>(this)->release();
72 return d;
73 }
74
75}
76
77// STATISTICS: kernel-branch