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95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* nsDiskModule. The disk cache module that stores the cache objects
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* on the disk.
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*
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* Gagan Saksena 02/03/98
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*
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*/
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#ifndef _nsDiskModule_H_
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#define _nsDiskModule_H_
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#include "nsCacheModule.h"
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#include "nsCachePref.h"
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#include "mcom_db.h"
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class nsDiskModule : public nsCacheModule
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{
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public:
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nsDiskModule(const PRUint32 size = nsCachePref::GetInstance()->DiskCacheSize());
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~nsDiskModule();
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// Cache module interface
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PRBool AddObject(nsCacheObject* io_pObject);
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PRUint32 AverageSize(void) const;
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PRBool Contains(nsCacheObject* io_pObject) const;
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PRBool Contains(const char* i_url) const;
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void GarbageCollect(void);
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nsCacheObject* GetObject(const PRUint32 i_index) const;
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nsCacheObject* GetObject(const char* i_url) const;
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nsStream* GetStreamFor(const nsCacheObject* i_pObject);
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PRBool Remove(const char* i_url);
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PRBool Remove(nsCacheObject* pObject);
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PRBool Remove(const PRUint32 i_index);
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// To do cleanup set size to zero. Else initialize disk cache
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void SetSize(const PRUint32 i_size);
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PRBool Revalidate(void);
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protected:
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PRBool ReduceSizeTo(const PRUint32 i_NewSize);
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private:
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enum sync_frequency
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{
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EVERYTIME,
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IDLE,
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NEVER
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} m_Sync;
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PRBool InitDB(void);
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nsDiskModule(const nsDiskModule& dm);
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nsDiskModule& operator=(const nsDiskModule& dm);
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DB* m_pDB;
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};
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inline
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PRUint32 nsDiskModule::AverageSize(void) const
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{
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MonitorLocker ml((nsDiskModule*)this);
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if (Entries()>0)
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{
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return (PRUint32)(m_SizeInUse/m_Entries);
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}
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return 0;
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}
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#endif
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