From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:54:28 +0200 Subject: Adding upstream version 18.2.2. Signed-off-by: Daniel Baumann --- src/rocksdb/table/block_based/reader_common.cc | 52 ++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/rocksdb/table/block_based/reader_common.cc (limited to 'src/rocksdb/table/block_based/reader_common.cc') diff --git a/src/rocksdb/table/block_based/reader_common.cc b/src/rocksdb/table/block_based/reader_common.cc new file mode 100644 index 000000000..0ff43e9b4 --- /dev/null +++ b/src/rocksdb/table/block_based/reader_common.cc @@ -0,0 +1,52 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). +// +// Copyright (c) 2011 The LevelDB Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. See the AUTHORS file for names of contributors. +#include "table/block_based/reader_common.h" + +#include "monitoring/perf_context_imp.h" +#include "rocksdb/table.h" +#include "table/format.h" +#include "util/coding.h" +#include "util/crc32c.h" +#include "util/string_util.h" + +namespace ROCKSDB_NAMESPACE { +void ForceReleaseCachedEntry(void* arg, void* h) { + Cache* cache = reinterpret_cast(arg); + Cache::Handle* handle = reinterpret_cast(h); + cache->Release(handle, true /* erase_if_last_ref */); +} + +// WART: this is specific to block-based table +Status VerifyBlockChecksum(ChecksumType type, const char* data, + size_t block_size, const std::string& file_name, + uint64_t offset) { + PERF_TIMER_GUARD(block_checksum_time); + // After block_size bytes is compression type (1 byte), which is part of + // the checksummed section. + size_t len = block_size + 1; + // And then the stored checksum value (4 bytes). + uint32_t stored = DecodeFixed32(data + len); + + uint32_t computed = ComputeBuiltinChecksum(type, data, len); + if (stored == computed) { + return Status::OK(); + } else { + // Unmask for people who might look for reference crc value + if (type == kCRC32c) { + stored = crc32c::Unmask(stored); + computed = crc32c::Unmask(computed); + } + return Status::Corruption( + "block checksum mismatch: stored = " + std::to_string(stored) + + ", computed = " + std::to_string(computed) + + ", type = " + std::to_string(type) + " in " + file_name + " offset " + + std::to_string(offset) + " size " + std::to_string(block_size)); + } +} +} // namespace ROCKSDB_NAMESPACE -- cgit v1.2.3