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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _nsCacheDevice_h_
#define _nsCacheDevice_h_
#include "nspr.h"
#include "nsError.h"
#include "nsICache.h"
class nsIFile;
class nsCString;
class nsCacheEntry;
class nsICacheVisitor;
class nsIInputStream;
class nsIOutputStream;
/******************************************************************************
* nsCacheDevice
*******************************************************************************/
class nsCacheDevice {
public:
nsCacheDevice() { MOZ_COUNT_CTOR(nsCacheDevice); }
virtual ~nsCacheDevice() { MOZ_COUNT_DTOR(nsCacheDevice); }
virtual nsresult Init() = 0;
virtual nsresult Shutdown() = 0;
virtual const char * GetDeviceID(void) = 0;
virtual nsCacheEntry * FindEntry( nsCString * key, bool *collision ) = 0;
virtual nsresult DeactivateEntry( nsCacheEntry * entry ) = 0;
virtual nsresult BindEntry( nsCacheEntry * entry ) = 0;
virtual void DoomEntry( nsCacheEntry * entry ) = 0;
virtual nsresult OpenInputStreamForEntry(nsCacheEntry * entry,
nsCacheAccessMode mode,
uint32_t offset,
nsIInputStream ** result) = 0;
virtual nsresult OpenOutputStreamForEntry(nsCacheEntry * entry,
nsCacheAccessMode mode,
uint32_t offset,
nsIOutputStream ** result) = 0;
virtual nsresult GetFileForEntry( nsCacheEntry * entry,
nsIFile ** result ) = 0;
virtual nsresult OnDataSizeChange( nsCacheEntry * entry, int32_t deltaSize ) = 0;
virtual nsresult Visit(nsICacheVisitor * visitor) = 0;
/**
* Device must evict entries associated with clientID. If clientID == nullptr, all
* entries must be evicted. Active entries must be doomed, rather than evicted.
*/
virtual nsresult EvictEntries(const char * clientID) = 0;
};
#endif // _nsCacheDevice_h_
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