| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | |
| | | 6 | | namespace CoreWCF.Runtime |
| | | 7 | | { |
| | | 8 | | internal static class Ticks |
| | | 9 | | { |
| | | 10 | | public static long Now |
| | | 11 | | { |
| | | 12 | | get |
| | | 13 | | { |
| | 0 | 14 | | return DateTime.UtcNow.Ticks; |
| | | 15 | | } |
| | | 16 | | } |
| | | 17 | | |
| | | 18 | | public static long FromMilliseconds(int milliseconds) |
| | | 19 | | { |
| | 0 | 20 | | return checked((long)milliseconds * TimeSpan.TicksPerMillisecond); |
| | | 21 | | } |
| | | 22 | | |
| | | 23 | | public static int ToMilliseconds(long ticks) |
| | | 24 | | { |
| | 0 | 25 | | return checked((int)(ticks / TimeSpan.TicksPerMillisecond)); |
| | | 26 | | } |
| | | 27 | | |
| | | 28 | | public static long FromTimeSpan(TimeSpan duration) |
| | | 29 | | { |
| | 0 | 30 | | return duration.Ticks; |
| | | 31 | | } |
| | | 32 | | |
| | | 33 | | public static TimeSpan ToTimeSpan(long ticks) |
| | | 34 | | { |
| | 0 | 35 | | return new TimeSpan(ticks); |
| | | 36 | | } |
| | | 37 | | |
| | | 38 | | public static long Add(long firstTicks, long secondTicks) |
| | | 39 | | { |
| | 0 | 40 | | if (firstTicks == long.MaxValue || firstTicks == long.MinValue) |
| | | 41 | | { |
| | 0 | 42 | | return firstTicks; |
| | | 43 | | } |
| | 0 | 44 | | if (secondTicks == long.MaxValue || secondTicks == long.MinValue) |
| | | 45 | | { |
| | 0 | 46 | | return secondTicks; |
| | | 47 | | } |
| | 0 | 48 | | if (firstTicks >= 0 && long.MaxValue - firstTicks <= secondTicks) |
| | | 49 | | { |
| | 0 | 50 | | return long.MaxValue - 1; |
| | | 51 | | } |
| | 0 | 52 | | if (firstTicks <= 0 && long.MinValue - firstTicks >= secondTicks) |
| | | 53 | | { |
| | 0 | 54 | | return long.MinValue + 1; |
| | | 55 | | } |
| | 0 | 56 | | return checked(firstTicks + secondTicks); |
| | | 57 | | } |
| | | 58 | | } |
| | | 59 | | } |