fb9811ee9b
Summary: Timing mutex operations can impact scalability of the system. Add a new perf context level that can measure time counters except for mutex. Test Plan: Add a new unit test case to make sure it is not set. Reviewers: IslamAbdelRahman, rven, kradhakrishnan, yhchiang, anthony Reviewed By: anthony Subscribers: MarkCallaghan, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D53199
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#pragma once
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#include "rocksdb/perf_context.h"
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#include "util/perf_step_timer.h"
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#include "util/stop_watch.h"
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namespace rocksdb {
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#if defined(NPERF_CONTEXT) || defined(IOS_CROSS_COMPILE)
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#define PERF_TIMER_GUARD(metric)
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#define PERF_CONDITIONAL_TIMER_GUARD(metric, condition)
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#define PERF_TIMER_MEASURE(metric)
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#define PERF_TIMER_STOP(metric)
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#define PERF_TIMER_START(metric)
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#define PERF_COUNTER_ADD(metric, value)
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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) \
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perf_step_timer_ ## metric.Stop();
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#define PERF_TIMER_START(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(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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#define PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(metric, condition) \
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PerfStepTimer perf_step_timer_##metric(&(perf_context.metric), true); \
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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) \
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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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perf_context.metric += value;
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#endif
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}
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