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| 1 // Copyright (c) 2012 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 #include "net/disk_cache/addr.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 namespace disk_cache { | |
| 10 | |
| 11 int Addr::start_block() const { | |
| 12 DCHECK(is_block_file()); | |
| 13 return value_ & kStartBlockMask; | |
| 14 } | |
| 15 | |
| 16 int Addr::num_blocks() const { | |
| 17 DCHECK(is_block_file() || !value_); | |
| 18 return ((value_ & kNumBlocksMask) >> kNumBlocksOffset) + 1; | |
| 19 } | |
| 20 | |
| 21 bool Addr::SetFileNumber(int file_number) { | |
| 22 DCHECK(is_separate_file()); | |
| 23 if (file_number & ~kFileNameMask) | |
| 24 return false; | |
| 25 value_ = kInitializedMask | file_number; | |
| 26 return true; | |
| 27 } | |
| 28 | |
| 29 bool Addr::SanityCheckV2() const { | |
| 30 if (!is_initialized()) | |
| 31 return !value_; | |
| 32 | |
| 33 if (file_type() > BLOCK_4K) | |
| 34 return false; | |
| 35 | |
| 36 if (is_separate_file()) | |
| 37 return true; | |
| 38 | |
| 39 return !reserved_bits(); | |
| 40 } | |
| 41 | |
| 42 bool Addr::SanityCheckV3() const { | |
| 43 if (!is_initialized()) | |
| 44 return !value_; | |
| 45 | |
| 46 // For actual entries, SanityCheckForEntryV3 should be used. | |
| 47 if (file_type() > BLOCK_FILES) | |
| 48 return false; | |
| 49 | |
| 50 if (is_separate_file()) | |
| 51 return true; | |
| 52 | |
| 53 return !reserved_bits(); | |
| 54 } | |
| 55 | |
| 56 bool Addr::SanityCheckForEntryV2() const { | |
| 57 if (!SanityCheckV2() || !is_initialized()) | |
| 58 return false; | |
| 59 | |
| 60 if (is_separate_file() || file_type() != BLOCK_256) | |
| 61 return false; | |
| 62 | |
| 63 return true; | |
| 64 } | |
| 65 | |
| 66 bool Addr::SanityCheckForEntryV3() const { | |
| 67 if (!is_initialized()) | |
| 68 return false; | |
| 69 | |
| 70 if (reserved_bits()) | |
| 71 return false; | |
| 72 | |
| 73 if (file_type() != BLOCK_ENTRIES && file_type() != BLOCK_EVICTED) | |
| 74 return false; | |
| 75 | |
| 76 if (num_blocks() != 1) | |
| 77 return false; | |
| 78 | |
| 79 return true; | |
| 80 } | |
| 81 | |
| 82 bool Addr::SanityCheckForRankings() const { | |
| 83 if (!SanityCheckV2() || !is_initialized()) | |
| 84 return false; | |
| 85 | |
| 86 if (is_separate_file() || file_type() != RANKINGS || num_blocks() != 1) | |
| 87 return false; | |
| 88 | |
| 89 return true; | |
| 90 } | |
| 91 | |
| 92 } // namespace disk_cache | |
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Chromium Code Reviews
Issue 121643003:
Reorganize net/disk_cache into backend specific directories. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src