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63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/disk_cache/blockfile/addr.h"
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#include "base/logging.h"
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namespace disk_cache {
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int Addr::start_block() const {
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DCHECK(is_block_file());
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return value_ & kStartBlockMask;
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}
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int Addr::num_blocks() const {
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DCHECK(is_block_file() || !value_);
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return ((value_ & kNumBlocksMask) >> kNumBlocksOffset) + 1;
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}
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bool Addr::SetFileNumber(int file_number) {
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DCHECK(is_separate_file());
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if (file_number & ~kFileNameMask)
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return false;
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value_ = kInitializedMask | file_number;
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return true;
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}
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bool Addr::SanityCheck() const {
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if (!is_initialized())
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return !value_;
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if (file_type() > BLOCK_4K)
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return false;
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if (is_separate_file())
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return true;
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return !reserved_bits();
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}
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bool Addr::SanityCheckForEntry() const {
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if (!SanityCheck() || !is_initialized())
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return false;
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if (is_separate_file() || file_type() != BLOCK_256)
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return false;
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return true;
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}
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bool Addr::SanityCheckForRankings() const {
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if (!SanityCheck() || !is_initialized())
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return false;
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if (is_separate_file() || file_type() != RANKINGS || num_blocks() != 1)
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return false;
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return true;
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}
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} // namespace disk_cache
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