/* -*- 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 _nsDiskCacheEntry_h_ #define _nsDiskCacheEntry_h_ #include "nsDiskCacheMap.h" #include "nsCacheEntry.h" /****************************************************************************** * nsDiskCacheEntry *****************************************************************************/ struct nsDiskCacheEntry { uint32_t mHeaderVersion; // useful for stand-alone metadata files uint32_t mMetaLocation; // for verification int32_t mFetchCount; uint32_t mLastFetched; uint32_t mLastModified; uint32_t mExpirationTime; uint32_t mDataSize; uint32_t mKeySize; // includes terminating null byte uint32_t mMetaDataSize; // includes terminating null byte // followed by key data (mKeySize bytes) // followed by meta data (mMetaDataSize bytes) uint32_t Size() { return sizeof(nsDiskCacheEntry) + mKeySize + mMetaDataSize; } char* Key() { return reinterpret_cast<char*>(this) + sizeof(nsDiskCacheEntry); } char* MetaData() { return Key() + mKeySize; } nsCacheEntry * CreateCacheEntry(nsCacheDevice * device); void Swap() // host to network (memory to disk) { #if defined(IS_LITTLE_ENDIAN) mHeaderVersion = htonl(mHeaderVersion); mMetaLocation = htonl(mMetaLocation); mFetchCount = htonl(mFetchCount); mLastFetched = htonl(mLastFetched); mLastModified = htonl(mLastModified); mExpirationTime = htonl(mExpirationTime); mDataSize = htonl(mDataSize); mKeySize = htonl(mKeySize); mMetaDataSize = htonl(mMetaDataSize); #endif } void Unswap() // network to host (disk to memory) { #if defined(IS_LITTLE_ENDIAN) mHeaderVersion = ntohl(mHeaderVersion); mMetaLocation = ntohl(mMetaLocation); mFetchCount = ntohl(mFetchCount); mLastFetched = ntohl(mLastFetched); mLastModified = ntohl(mLastModified); mExpirationTime = ntohl(mExpirationTime); mDataSize = ntohl(mDataSize); mKeySize = ntohl(mKeySize); mMetaDataSize = ntohl(mMetaDataSize); #endif } }; /****************************************************************************** * nsDiskCacheEntryInfo *****************************************************************************/ class nsDiskCacheEntryInfo : public nsICacheEntryInfo { public: NS_DECL_ISUPPORTS NS_DECL_NSICACHEENTRYINFO nsDiskCacheEntryInfo(const char * deviceID, nsDiskCacheEntry * diskEntry) : mDeviceID(deviceID) , mDiskEntry(diskEntry) { } const char* Key() { return mDiskEntry->Key(); } private: virtual ~nsDiskCacheEntryInfo() {} const char * mDeviceID; nsDiskCacheEntry * mDiskEntry; }; #endif /* _nsDiskCacheEntry_h_ */