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// **********************************************************************
//
// Copyright (c) 2003-2010 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <SimpleEvictor.h>
#include <ItemI.h>
#include <IceUtil/Mutex.h>
using namespace std;
using namespace IceUtil;
namespace
{
int cacheMisses = 0;
IceUtil::Mutex* globalMutex = 0;
class Init
{
public:
Init()
{
globalMutex = new IceUtil::Mutex;
}
~Init()
{
delete globalMutex;
globalMutex = 0;
}
};
Init init;
}
SimpleEvictor::SimpleEvictor(CurrentDatabase& currentDb, int size) :
EvictorBase(size),
_currentDb(currentDb)
{
}
Ice::ObjectPtr
SimpleEvictor::add(const Ice::Current& current, Ice::LocalObjectPtr& cookie)
{
cookie = 0;
{
IceUtil::Mutex::Lock lock(*globalMutex);
cacheMisses++;
if(cacheMisses % 1000 == 0)
{
cout << cacheMisses << " cache misses" << endl;
}
}
//
// You can simulate more expensive cache-misses by adding a sleep here:
//
// ThreadControl::sleep(Time::milliSeconds(1));
//
// Use a const Database& to avoid starting a transaction (just an optimization).
//
const Database& cdb = _currentDb.get();
Database::const_iterator p = cdb.find(current.id.name);
if(p == cdb.end())
{
return 0;
}
else
{
return new ItemI(_currentDb, p->second);
}
}
void
SimpleEvictor::evict(const Ice::ObjectPtr&, const Ice::LocalObjectPtr&)
{
//
// Nothing to do.
//
}
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