|
|
/* Copyright (C) 2000 Stefan Westerfeld stefan@space.twc.de This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _SYNTH_CACHE_H #define _SYNTH_CACHE_H #include <time.h> #include <list> #include <string> #include "startupmanager.h" /* * BC - Status (2000-09-30): Cache, CachedObject * * At the current point in time, there are NO GUARANTEES, so only use this * in apps part of official KDE releases (such as kdemultimedia apps), which * know what is happening here. */ namespace Arts { class Cache; class CachedObject { private: std::string _object_key; int _ref_cnt; time_t _lastAccess; protected: void setKey(std::string key); public: std::string getKey(); time_t lastAccess(); void decRef(); void incRef(); int refCnt(); virtual bool isValid(); virtual int memoryUsage() = 0; CachedObject(Cache *cache); virtual ~CachedObject(); }; class Cache { protected: std::list<CachedObject *> objects; Cache(); ~Cache(); static Cache *_instance; public: static Cache *the(); static void shutdown(); static long memused; CachedObject *get(std::string key); void add(CachedObject *object); // garbage collection; returns amount of memory used (after cleaning) long cleanUp(long cacheLimit); }; }; #endif
Generated by: stefan@stefan on Sat Feb 24 19:11:23 2001, using kdoc 2.0a47. |