/usr/include/rocksdb/iostats_context.h is in librocksdb-dev 4.5.1-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | // Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#pragma once
#include <stdint.h>
#include <string>
#include "rocksdb/perf_level.h"
// A thread local context for gathering io-stats efficiently and transparently.
// Use SetPerfLevel(PerfLevel::kEnableTime) to enable time stats.
namespace rocksdb {
struct IOStatsContext {
// reset all io-stats counter to zero
void Reset();
std::string ToString() const;
// the thread pool id
uint64_t thread_pool_id;
// number of bytes that has been written.
uint64_t bytes_written;
// number of bytes that has been read.
uint64_t bytes_read;
// time spent in open() and fopen().
uint64_t open_nanos;
// time spent in fallocate().
uint64_t allocate_nanos;
// time spent in write() and pwrite().
uint64_t write_nanos;
// time spent in read() and pread()
uint64_t read_nanos;
// time spent in sync_file_range().
uint64_t range_sync_nanos;
// time spent in fsync
uint64_t fsync_nanos;
// time spent in preparing write (fallocate etc).
uint64_t prepare_write_nanos;
// time spent in Logger::Logv().
uint64_t logger_nanos;
};
#ifndef IOS_CROSS_COMPILE
# ifdef _WIN32
extern __declspec(thread) IOStatsContext iostats_context;
# else
extern __thread IOStatsContext iostats_context;
# endif
#endif // IOS_CROSS_COMPILE
} // namespace rocksdb
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