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rocksdb/table/table_reader_caller.h

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// 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).
#pragma once
namespace ROCKSDB_NAMESPACE {
// A list of callers for a table reader. It is used to trace the caller that
// accesses on a block. This is only used for block cache tracing and analysis.
// A user may use kUncategorized if the caller is not interesting for analysis
// or the table reader is called in the test environment, e.g., unit test, table
// reader benchmark, etc.
enum TableReaderCaller : char {
kUserGet = 1,
kUserMultiGet = 2,
kUserIterator = 3,
kUserApproximateSize = 4,
kUserVerifyChecksum = 5,
kSSTDumpTool = 6,
kExternalSSTIngestion = 7,
kRepair = 8,
kPrefetch = 9,
kCompaction = 10,
// A compaction job may refill the block cache with blocks in the new SST
// files if paranoid_file_checks is true.
kCompactionRefill = 11,
// After building a table, it may load all its blocks into the block cache if
// paranoid_file_checks is true.
kFlush = 12,
// sst_file_reader.
kSSTFileReader = 13,
// A list of callers that are either not interesting for analysis or are
// calling from a test environment, e.g., unit test, benchmark, etc.
kUncategorized = 14,
// All callers should be added before kMaxBlockCacheLookupCaller.
kMaxBlockCacheLookupCaller
};
} // namespace ROCKSDB_NAMESPACE