1// Copyright (c) 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_H_ 6#define NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_H_ 7 8 9#include "base/basictypes.h" 10#include "base/port.h" 11#include "net/base/net_export.h" 12 13namespace base { 14class Time; 15} 16 17namespace disk_cache { 18 19const uint64 kSimpleInitialMagicNumber = GG_UINT64_C(0xfcfb6d1ba7725c30); 20const uint64 kSimpleFinalMagicNumber = GG_UINT64_C(0xf4fa6f45970d41d8); 21 22// A file in the Simple cache consists of a SimpleFileHeader followed 23// by data. 24 25// A file in the Simple cache consists of: 26// - a SimpleFileHeader. 27// - the key. 28// - the data. 29// - at the end, a SimpleFileEOF record. 30const uint32 kSimpleVersion = 4; 31 32static const int kSimpleEntryFileCount = 3; 33 34struct NET_EXPORT_PRIVATE SimpleFileHeader { 35 SimpleFileHeader(); 36 37 uint64 initial_magic_number; 38 uint32 version; 39 uint32 key_length; 40 uint32 key_hash; 41}; 42 43struct SimpleFileEOF { 44 enum Flags { 45 FLAG_HAS_CRC32 = (1U << 0), 46 }; 47 48 SimpleFileEOF(); 49 50 uint64 final_magic_number; 51 uint32 flags; 52 uint32 data_crc32; 53}; 54 55} // namespace disk_cache 56 57#endif // NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_H_ 58