jiuyiUniapp/service/node_modules/react-native/ReactCommon/react/timing/primitives.h

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1012 B
C++

/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <chrono>
namespace facebook::react {
// `DOMHighResTimeStamp` represents a time value in milliseconds (time point or
// duration), with sub-millisecond precision.
// On the Web, the precision can be reduced for security purposes, but that is
// not necessary in React Native.
using DOMHighResTimeStamp = double;
constexpr DOMHighResTimeStamp DOM_HIGH_RES_TIME_STAMP_UNSET = -1.0;
inline DOMHighResTimeStamp chronoToDOMHighResTimeStamp(
std::chrono::steady_clock::duration duration) {
return static_cast<std::chrono::duration<double, std::milli>>(duration)
.count();
}
inline DOMHighResTimeStamp chronoToDOMHighResTimeStamp(
std::chrono::steady_clock::time_point timePoint) {
return chronoToDOMHighResTimeStamp(timePoint.time_since_epoch());
}
} // namespace facebook::react