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rocksdb/table/block_based/reader_common.h

37 lines
1.5 KiB

// 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.
#pragma once
#include "rocksdb/table.h"
namespace ROCKSDB_NAMESPACE {
// Release the cached entry and decrement its ref count.
extern void ForceReleaseCachedEntry(void* arg, void* h);
inline MemoryAllocator* GetMemoryAllocator(
const BlockBasedTableOptions& table_options) {
return table_options.block_cache.get()
? table_options.block_cache->memory_allocator()
: nullptr;
}
inline MemoryAllocator* GetMemoryAllocatorForCompressedBlock(
const BlockBasedTableOptions& table_options) {
return table_options.block_cache_compressed.get()
? table_options.block_cache_compressed->memory_allocator()
: nullptr;
}
// Assumes block has a trailer as in format.h. file_name and offset provided
// for generating a diagnostic message in returned status.
extern Status VerifyBlockChecksum(ChecksumType type, const char* data,
size_t block_size,
const std::string& file_name,
uint64_t offset);
} // namespace ROCKSDB_NAMESPACE