48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB 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. See the AUTHORS file for names of contributors.
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#include "table/block_based/reader_common.h"
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#include "util/crc32c.h"
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#include "util/xxhash.h"
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namespace ROCKSDB_NAMESPACE {
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void ForceReleaseCachedEntry(void* arg, void* h) {
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Cache* cache = reinterpret_cast<Cache*>(arg);
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Cache::Handle* handle = reinterpret_cast<Cache::Handle*>(h);
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cache->Release(handle, true /* force_erase */);
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}
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Status VerifyChecksum(const ChecksumType type, const char* buf, size_t len,
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uint32_t expected) {
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Status s;
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uint32_t actual = 0;
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switch (type) {
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case kNoChecksum:
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break;
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case kCRC32c:
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expected = crc32c::Unmask(expected);
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actual = crc32c::Value(buf, len);
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break;
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case kxxHash:
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actual = XXH32(buf, static_cast<int>(len), 0);
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break;
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case kxxHash64:
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actual = static_cast<uint32_t>(XXH64(buf, static_cast<int>(len), 0) &
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uint64_t{0xffffffff});
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break;
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default:
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s = Status::Corruption("unknown checksum type");
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}
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if (s.ok() && actual != expected) {
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s = Status::Corruption("properties block checksum mismatched");
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}
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return s;
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}
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} // namespace ROCKSDB_NAMESPACE
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