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// -*- c++ -*-
#pragma once
#include <time.h>
#include "moses/TargetPhraseCollection.h"
#include <boost/atomic.hpp>
#include "mm/ug_typedefs.h"
namespace Moses
{
class TPCollWrapper;
class TPCollCache
{
public:
// typedef boost::unordered_map<uint64_t, SPTR<TPCollWrapper> > cache_t;
typedef std::map<uint64_t, SPTR<TPCollWrapper> > cache_t;
private:
uint32_t m_capacity; // capacity of cache
cache_t m_cache; // maps from ids to items
cache_t::iterator m_qfirst, m_qlast;
mutable boost::shared_mutex m_lock;
public:
TPCollCache(size_t capacity=10000);
SPTR<TPCollWrapper>
get(uint64_t key, size_t revision);
};
// wrapper around TargetPhraseCollection with reference counting
// and additional members for caching purposes
class TPCollWrapper
: public TargetPhraseCollection
{
friend class TPCollCache;
friend class Mmsapt;
public:
TPCollCache::cache_t::iterator prev, next;
public:
mutable boost::shared_mutex lock;
size_t const revision; // rev. No. of the underlying corpus
uint64_t const key; // phrase key
TPCollWrapper(uint64_t const key, size_t const rev);
~TPCollWrapper();
};
}
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