1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
2 //  This source code is licensed under both the GPLv2 (found in the
3 //  COPYING file in the root directory) and Apache 2.0 License
4 //  (found in the LICENSE.Apache file in the root directory).
5 
6 #pragma once
7 
8 #include <stdint.h>
9 #include <string>
10 
11 #include "rocksdb/rocksdb_namespace.h"
12 
13 namespace ROCKSDB_NAMESPACE {
14 
15 // How much perf stats to collect. Affects perf_context and iostats_context.
16 enum PerfLevel : unsigned char {
17   kUninitialized = 0,             // unknown setting
18   kDisable = 1,                   // disable perf stats
19   kEnableCount = 2,               // enable only count stats
20   kEnableTimeExceptForMutex = 3,  // Other than count stats, also enable time
21                                   // stats except for mutexes
22   // Other than time, also measure CPU time counters. Still don't measure
23   // time (neither wall time nor CPU time) for mutexes.
24   kEnableTimeAndCPUTimeExceptForMutex = 4,
25   kEnableTime = 5,  // enable count and time stats
26   kOutOfBounds = 6  // N.B. Must always be the last value!
27 };
28 
29 // set the perf stats level for current thread
30 void SetPerfLevel(PerfLevel level);
31 
32 // get current perf stats level for current thread
33 PerfLevel GetPerfLevel();
34 
35 }  // namespace ROCKSDB_NAMESPACE
36