mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-12-26 21:42:19 +03:00
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/***********************************************************************
|
|
Moses - statistical machine translation system
|
|
Copyright (C) 2006-2011 University of Edinburgh
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
***********************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include "AlignmentInfo.h"
|
|
|
|
#include <set>
|
|
|
|
#ifdef WITH_THREADS
|
|
#include <boost/thread/shared_mutex.hpp>
|
|
#include <boost/thread/locks.hpp>
|
|
#endif
|
|
|
|
namespace Moses
|
|
{
|
|
|
|
/** Singleton collection of all AlignmentInfo objects.
|
|
* Used as a cache of all alignment info to save space.
|
|
*/
|
|
class AlignmentInfoCollection
|
|
{
|
|
public:
|
|
static AlignmentInfoCollection &Instance() { return s_instance; }
|
|
|
|
/** Returns a pointer to an AlignmentInfo object with the same source-target
|
|
* alignment pairs as given in the argument. If the collection already
|
|
* contains such an object then returns a pointer to it; otherwise a new
|
|
* one is inserted.
|
|
*/
|
|
const AlignmentInfo *Add(const std::set<std::pair<size_t,size_t> > &);
|
|
|
|
//! Returns a pointer to an empty AlignmentInfo object.
|
|
const AlignmentInfo &GetEmptyAlignmentInfo() const;
|
|
|
|
private:
|
|
typedef std::set<AlignmentInfo, AlignmentInfoOrderer> AlignmentInfoSet;
|
|
|
|
//! Only a single static variable should be created.
|
|
AlignmentInfoCollection();
|
|
~AlignmentInfoCollection();
|
|
|
|
static AlignmentInfoCollection s_instance;
|
|
|
|
#ifdef WITH_THREADS
|
|
//reader-writer lock
|
|
mutable boost::shared_mutex m_accessLock;
|
|
#endif
|
|
|
|
AlignmentInfoSet m_collection;
|
|
const AlignmentInfo *m_emptyAlignmentInfo;
|
|
};
|
|
|
|
}
|