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 13 namespace base { 14 class Time; 15 } 16 17 namespace disk_cache { 18 19 const uint64 kSimpleInitialMagicNumber = GG_UINT64_C(0xfcfb6d1ba7725c30); 20 const 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. 30 const uint32 kSimpleVersion = 4; 31 32 static const int kSimpleEntryFileCount = 3; 33 34 struct 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 43 struct 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
