mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2025-10-31 06:17:18 +01:00
4a6bfc086c
Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
//
|
|
// AccessExpireStrategy.h
|
|
//
|
|
// Library: Foundation
|
|
// Package: Cache
|
|
// Module: AccessExpireStrategy
|
|
//
|
|
// Definition of the AccessExpireStrategy class.
|
|
//
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_AccessExpireStrategy_INCLUDED
|
|
#define Foundation_AccessExpireStrategy_INCLUDED
|
|
|
|
|
|
#include "Poco/KeyValueArgs.h"
|
|
#include "Poco/ValidArgs.h"
|
|
#include "Poco/ExpireStrategy.h"
|
|
#include "Poco/Bugcheck.h"
|
|
#include "Poco/Timestamp.h"
|
|
#include "Poco/EventArgs.h"
|
|
#include <set>
|
|
#include <map>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
template <
|
|
class TKey,
|
|
class TValue
|
|
>
|
|
class AccessExpireStrategy: public ExpireStrategy<TKey, TValue>
|
|
/// An AccessExpireStrategy implements time and access based expiration of cache entries
|
|
{
|
|
public:
|
|
AccessExpireStrategy(Timestamp::TimeDiff expireTimeInMilliSec): ExpireStrategy<TKey, TValue>(expireTimeInMilliSec)
|
|
/// Create an expire strategy. Note that the smallest allowed caching time is 25ms.
|
|
/// Anything lower than that is not useful with current operating systems.
|
|
{
|
|
}
|
|
|
|
~AccessExpireStrategy()
|
|
{
|
|
}
|
|
|
|
void onGet(const void*, const TKey& key)
|
|
{
|
|
// get triggers an update to the expiration time
|
|
typename ExpireStrategy<TKey, TValue>::Iterator it = this->_keys.find(key);
|
|
if (it != this->_keys.end())
|
|
{
|
|
if (!it->second->first.isElapsed(this->_expireTime)) // don't extend if already expired
|
|
{
|
|
this->_keyIndex.erase(it->second);
|
|
Timestamp now;
|
|
typename ExpireStrategy<TKey, TValue>::IndexIterator itIdx =
|
|
this->_keyIndex.insert(typename ExpireStrategy<TKey, TValue>::TimeIndex::value_type(now, key));
|
|
it->second = itIdx;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_AccessExpireStrategy_INCLUDED
|