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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_LATENCY_LATENCY_HISTOGRAM_MACROS_H_
#define UI_LATENCY_LATENCY_HISTOGRAM_MACROS_H_
#include "base/metrics/histogram_functions.h"
// Check valid timing for start and end latency components.
#define CONFIRM_EVENT_TIMES_EXIST(start, end) \
DCHECK(!start.first_event_time.is_null()); \
DCHECK(!end.last_event_time.is_null());
// Event latency that is mostly under 1 second. We should only use 100 buckets
// when needed.
#define UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(name, start, \
end) \
CONFIRM_EVENT_TIMES_EXIST(start, end) \
base::UmaHistogramCustomCounts( \
name, \
std::max( \
static_cast<int64_t>(0), \
(end.last_event_time - start.first_event_time).InMicroseconds()), \
1, 1000000, 100);
#define UMA_HISTOGRAM_INPUT_LATENCY_MILLISECONDS(name, start, end) \
CONFIRM_EVENT_TIMES_EXIST(start, end) \
base::UmaHistogramCustomCounts( \
name, \
std::max( \
static_cast<int64_t>(0), \
(end.last_event_time - start.first_event_time).InMilliseconds()), \
1, 1000, 50);
// Long touch/wheel scroll latency component that is mostly under 200ms.
#define UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(name, start, end) \
CONFIRM_EVENT_TIMES_EXIST(start, end) \
base::Histogram::FactoryGet(name, 1000, 200000, 50, \
base::HistogramBase::kUmaTargetedHistogramFlag) \
->Add(std::max( \
static_cast<int64_t>(0), \
(end.last_event_time - start.first_event_time).InMicroseconds()));
// Short touch/wheel scroll latency component that is mostly under 50ms.
#define UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(name, start, end) \
CONFIRM_EVENT_TIMES_EXIST(start, end) \
base::Histogram::FactoryGet(name, 1, 50000, 50, \
base::HistogramBase::kUmaTargetedHistogramFlag) \
->Add(std::max( \
static_cast<int64_t>(0), \
(end.last_event_time - start.first_event_time).InMicroseconds()));
#endif // UI_LATENCY_LATENCY_HISTOGRAM_MACROS_H_
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