ceph/src/rocksdb/monitoring/iostats_context_imp.h

   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 #include "monitoring/perf_step_timer.h"
   8 #include "rocksdb/iostats_context.h"
   9
  10 #if !defined(NIOSTATS_CONTEXT)
  11 namespace ROCKSDB_NAMESPACE {
  12 extern thread_local IOStatsContext iostats_context;
  13 }  // namespace ROCKSDB_NAMESPACE
  14
  15 // increment a specific counter by the specified value
  16 #define IOSTATS_ADD(metric, value)        \
  17   if (!iostats_context.disable_iostats) { \
  18     iostats_context.metric += value;      \
  19   }
  20
  21 // reset a specific counter to zero
  22 #define IOSTATS_RESET(metric) (iostats_context.metric = 0)
  23
  24 // reset all counters to zero
  25 #define IOSTATS_RESET_ALL() (iostats_context.Reset())
  26
  27 #define IOSTATS_SET_THREAD_POOL_ID(value) \
  28   (iostats_context.thread_pool_id = value)
  29
  30 #define IOSTATS_THREAD_POOL_ID() (iostats_context.thread_pool_id)
  31
  32 #define IOSTATS(metric) (iostats_context.metric)
  33
  34 // Declare and set start time of the timer
  35 #define IOSTATS_TIMER_GUARD(metric)                                     \
  36   PerfStepTimer iostats_step_timer_##metric(&(iostats_context.metric)); \
  37   iostats_step_timer_##metric.Start();
  38
  39 // Declare and set start time of the timer
  40 #define IOSTATS_CPU_TIMER_GUARD(metric, clock)         \
  41   PerfStepTimer iostats_step_timer_##metric(           \
  42       &(iostats_context.metric), clock, true,          \
  43       PerfLevel::kEnableTimeAndCPUTimeExceptForMutex); \
  44   iostats_step_timer_##metric.Start();
  45
  46 #define IOSTATS_SET_DISABLE(disable) (iostats_context.disable_iostats = disable)
  47
  48 #else  // !NIOSTATS_CONTEXT
  49
  50 #define IOSTATS_ADD(metric, value)
  51 #define IOSTATS_ADD_IF_POSITIVE(metric, value)
  52 #define IOSTATS_RESET(metric)
  53 #define IOSTATS_RESET_ALL()
  54 #define IOSTATS_SET_THREAD_POOL_ID(value)
  55 #define IOSTATS_THREAD_POOL_ID()
  56 #define IOSTATS(metric) 0
  57 #define IOSTATS_SET_DISABLE(disable)
  58
  59 #define IOSTATS_TIMER_GUARD(metric)
  60 #define IOSTATS_CPU_TIMER_GUARD(metric, clock) static_cast<void>(clock)
  61
  62 #endif  // !NIOSTATS_CONTEXT