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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, 2009
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/search.hh>
35#include <gecode/search/support.hh>
36
37#include <gecode/search/seq/dfs.hh>
38#ifdef GECODE_HAS_THREADS
39#include <gecode/search/par/dfs.hh>
40#endif
41
42namespace Gecode { namespace Search {
43
44 Engine*
45 dfsengine(Space* s, const Options& o) {
46#ifdef GECODE_HAS_THREADS
47 Options to = o.expand();
48 if (to.threads == 1.0) {
49 if (to.tracer)
50 return new WorkerToEngine<Seq::DFS<TraceRecorder>>(s,to);
51 else
52 return new WorkerToEngine<Seq::DFS<NoTraceRecorder>>(s,to);
53 } else {
54 if (to.tracer)
55 return new Par::DFS<EdgeTraceRecorder>(s,to);
56 else
57 return new Par::DFS<NoTraceRecorder>(s,to);
58 }
59#else
60 if (to.tracer)
61 return new WorkerToEngine<Seq::DFS<TraceRecorder>>(s,to);
62 else
63 return new WorkerToEngine<Seq::DFS<NoTraceRecorder>>(s,to);
64#endif
65 }
66
67}}
68
69// STATISTICS: search-other