12f1137355
Summary: Introduces and uses a SystemClock class to RocksDB. This class contains the time-related functions of an Env and these functions can be redirected from the Env to the SystemClock. Many of the places that used an Env (Timer, PerfStepTimer, RepeatableThread, RateLimiter, WriteController) for time-related functions have been changed to use SystemClock instead. There are likely more places that can be changed, but this is a start to show what can/should be done. Over time it would be nice to migrate most (if not all) of the uses of the time functions from the Env to the SystemClock. There are several Env classes that implement these functions. Most of these have not been converted yet to SystemClock implementations; that will come in a subsequent PR. It would be good to unify many of the Mock Timer implementations, so that they behave similarly and be tested similarly (some override Sleep, some use a MockSleep, etc). Additionally, this change will allow new methods to be introduced to the SystemClock (like https://github.com/facebook/rocksdb/issues/7101 WaitFor) in a consistent manner across a smaller number of classes. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7858 Reviewed By: pdillinger Differential Revision: D26006406 Pulled By: mrambacher fbshipit-source-id: ed10a8abbdab7ff2e23d69d85bd25b3e7e899e90
98 lines
4.1 KiB
C++
98 lines
4.1 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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#pragma once
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#include "monitoring/perf_step_timer.h"
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#include "rocksdb/perf_context.h"
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#include "util/stop_watch.h"
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namespace ROCKSDB_NAMESPACE {
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#if defined(NPERF_CONTEXT) || !defined(ROCKSDB_SUPPORT_THREAD_LOCAL)
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extern PerfContext perf_context;
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#else
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#if defined(OS_SOLARIS)
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extern __thread PerfContext perf_context_;
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#define perf_context (*get_perf_context())
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#else
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extern thread_local PerfContext perf_context;
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#endif
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#endif
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#if defined(NPERF_CONTEXT)
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#define PERF_TIMER_STOP(metric)
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#define PERF_TIMER_START(metric)
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#define PERF_TIMER_GUARD(metric)
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#define PERF_TIMER_GUARD_WITH_CLOCK(metric, clock)
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#define PERF_CPU_TIMER_GUARD(metric, clock)
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#define PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(metric, condition, stats, \
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ticker_type)
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#define PERF_TIMER_MEASURE(metric)
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#define PERF_COUNTER_ADD(metric, value)
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#define PERF_COUNTER_BY_LEVEL_ADD(metric, value, level)
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#else
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// Stop the timer and update the metric
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#define PERF_TIMER_STOP(metric) perf_step_timer_##metric.Stop();
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#define PERF_TIMER_START(metric) perf_step_timer_##metric.Start();
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// Declare and set start time of the timer
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#define PERF_TIMER_GUARD(metric) \
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PerfStepTimer perf_step_timer_##metric(&(perf_context.metric)); \
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perf_step_timer_##metric.Start();
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// Declare and set start time of the timer
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#define PERF_TIMER_GUARD_WITH_CLOCK(metric, clock) \
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PerfStepTimer perf_step_timer_##metric(&(perf_context.metric), clock); \
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perf_step_timer_##metric.Start();
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// Declare and set start time of the timer
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#define PERF_CPU_TIMER_GUARD(metric, clock) \
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PerfStepTimer perf_step_timer_##metric( \
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&(perf_context.metric), clock, true, \
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PerfLevel::kEnableTimeAndCPUTimeExceptForMutex); \
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perf_step_timer_##metric.Start();
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#define PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(metric, condition, stats, \
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ticker_type) \
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PerfStepTimer perf_step_timer_##metric(&(perf_context.metric), nullptr, \
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false, PerfLevel::kEnableTime, stats, \
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ticker_type); \
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if (condition) { \
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perf_step_timer_##metric.Start(); \
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}
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// Update metric with time elapsed since last START. start time is reset
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// to current timestamp.
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#define PERF_TIMER_MEASURE(metric) perf_step_timer_##metric.Measure();
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// Increase metric value
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#define PERF_COUNTER_ADD(metric, value) \
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if (perf_level >= PerfLevel::kEnableCount) { \
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perf_context.metric += value; \
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}
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// Increase metric value
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#define PERF_COUNTER_BY_LEVEL_ADD(metric, value, level) \
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if (perf_level >= PerfLevel::kEnableCount && \
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perf_context.per_level_perf_context_enabled && \
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perf_context.level_to_perf_context) { \
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if ((*(perf_context.level_to_perf_context)).find(level) != \
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(*(perf_context.level_to_perf_context)).end()) { \
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(*(perf_context.level_to_perf_context))[level].metric += value; \
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} \
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else { \
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PerfContextByLevel empty_context; \
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(*(perf_context.level_to_perf_context))[level] = empty_context; \
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(*(perf_context.level_to_perf_context))[level].metric += value; \
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} \
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} \
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#endif
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} // namespace ROCKSDB_NAMESPACE
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