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xiaoguo0742
018288224f
PR-URL: #1716 Reviewed-By: superzheng <superzheng@tencent.com> Reviewed-By: pollyzhang <pollyzhang@tencent.com> Reviewed-By: maxli <maxli@tencent.com> Reviewed-By: ozonelmy <ozonelmy@163.com> Co-authored-by: nolantang <nolantang@tencent.com> Co-authored-by: ivanfanwu <ivanfanwu@tencent.com> Co-authored-by: Zoom Chan <zoom_chan@163.com>
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
/*
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* Tencent is pleased to support the open source community by making
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* Hippy available.
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*
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* Copyright (C) 2017-2019 THL A29 Limited, a Tencent company.
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* All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <chrono>
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#include <sstream>
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#include <string>
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namespace hippy::devtools {
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using Clock = std::chrono::steady_clock;
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using TimePoint = std::chrono::time_point<Clock>;
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using Duration = std::chrono::nanoseconds;
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constexpr Duration kDefaultFrameBudget = Duration(std::chrono::nanoseconds(1000000000LL / 60LL));
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/**
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* @brief easy time stamp acquisition utility class
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* simple encapsulation of the system's steady_clock, easy to use
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*/
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class SteadyClockTime {
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public:
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enum class TimeUnit : uint32_t { kNanoSeconds, kMicroSeconds, kMilliSeconds, kSeconds, kMinutes, kHours };
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/**
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* @brief fetch interval
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* the start time is the system startup time and does not change with the system time
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* @param time_unit
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* @return
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*/
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static uint64_t NowTimeSinceEpoch(TimeUnit time_unit = TimeUnit::kNanoSeconds) {
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auto now = std::chrono::steady_clock::now();
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auto duration = std::chrono::time_point_cast<std::chrono::nanoseconds>(now).time_since_epoch().count();
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switch (time_unit) {
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case TimeUnit::kMicroSeconds:
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duration = std::chrono::time_point_cast<std::chrono::microseconds>(now).time_since_epoch().count();
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break;
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case TimeUnit::kMilliSeconds:
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duration = std::chrono::time_point_cast<std::chrono::milliseconds>(now).time_since_epoch().count();
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break;
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case TimeUnit::kSeconds:
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duration = std::chrono::time_point_cast<std::chrono::seconds>(now).time_since_epoch().count();
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break;
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case TimeUnit::kMinutes:
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duration = std::chrono::time_point_cast<std::chrono::minutes>(now).time_since_epoch().count();
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break;
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case TimeUnit::kHours:
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duration = std::chrono::time_point_cast<std::chrono::hours>(now).time_since_epoch().count();
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break;
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default:
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break;
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}
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return static_cast<uint64_t>(duration);
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}
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/**
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* @brief gets the interval string
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* @param time_unit
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* @return
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*/
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static const std::string NowTimeSinceEpochStr(TimeUnit time_unit = TimeUnit::kNanoSeconds) {
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auto duration = NowTimeSinceEpoch(time_unit);
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std::stringstream time_string_stream;
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time_string_stream << duration;
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return time_string_stream.str();
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}
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};
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} // namespace hippy::devtools
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