зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.5 KiB
C++
84 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998-1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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*/
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/**
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* nsMemCache is the implementation of an in-memory network-data
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* cache, used to cache the responses to network retrieval commands.
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* Each cache entry may contain both content, e.g. GIF image data, and
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* associated metadata, e.g. HTTP headers. Each entry is indexed by
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* two different keys: a record id number and an opaque key, which is
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* created by the cache manager by combining the URI with a "secondary
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* key", e.g. HTTP post data.
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*/
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#ifndef _nsMemCache_h_
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#define _nsMemCache_h_
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#include "nsINetDataCache.h"
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// Maximum number of URIs that may be resident in the cache
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#define MEM_CACHE_MAX_ENTRIES 1000
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#define MEM_CACHE_SEGMENT_SIZE (1 << 12)
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#define MEM_CACHE_MAX_ENTRY_SIZE (1 << 20)
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class nsHashtable;
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class nsMemCacheRecord;
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class nsMemCache : public nsINetDataCache
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{
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public:
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nsMemCache();
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virtual ~nsMemCache();
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nsresult Init();
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// nsISupports methods
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NS_DECL_ISUPPORTS
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// nsINetDataCache methods
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NS_DECL_NSINETDATACACHE
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// Factory
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static NS_METHOD nsMemCacheConstructor(nsISupports *aOuter, REFNSIID aIID,
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void **aResult);
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protected:
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PRUint32 mNumEntries;
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PRUint32 mOccupancy; // Memory used, in bytes
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PRBool mEnabled; // If false, bypass mem cache
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nsINetDataCache* mNextCache;
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// Mapping from either opaque key or record ID to nsMemCacheRecord
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nsHashtable* mHashTable;
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// Used to assign record ID's
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static PRInt32 gRecordSerialNumber;
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NS_METHOD Delete(nsMemCacheRecord* aRecord);
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friend class nsMemCacheRecord;
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friend class nsMemCacheChannel;
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};
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#endif // _nsMemCache_h_
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