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rocksdb/monitoring/perf_context_imp.h

51 lines
1.8 KiB

// Copyright (c) 2011-present, 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.
// This source code is also licensed under the GPLv2 license found in the
// COPYING file in the root directory of this source tree.
//
#pragma once
#include "monitoring/perf_step_timer.h"
#include "rocksdb/perf_context.h"
#include "util/stop_watch.h"
namespace rocksdb {
#if defined(NPERF_CONTEXT)
#define PERF_TIMER_GUARD(metric)
#define PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(metric, condition)
#define PERF_TIMER_MEASURE(metric)
#define PERF_TIMER_STOP(metric)
#define PERF_TIMER_START(metric)
#define PERF_COUNTER_ADD(metric, value)
#else
// Stop the timer and update the metric
#define PERF_TIMER_STOP(metric) perf_step_timer_##metric.Stop();
#define PERF_TIMER_START(metric) perf_step_timer_##metric.Start();
// Declare and set start time of the timer
#define PERF_TIMER_GUARD(metric) \
PerfStepTimer perf_step_timer_##metric(&(get_perf_context()->metric)); \
perf_step_timer_##metric.Start();
#define PERF_CONDITIONAL_TIMER_FOR_MUTEX_GUARD(metric, condition) \
PerfStepTimer perf_step_timer_##metric(&(get_perf_context()->metric), true); \
if ((condition)) { \
perf_step_timer_##metric.Start(); \
}
// Update metric with time elapsed since last START. start time is reset
// to current timestamp.
#define PERF_TIMER_MEASURE(metric) perf_step_timer_##metric.Measure();
// Increase metric value
#define PERF_COUNTER_ADD(metric, value) get_perf_context()->metric += value;
#endif
}