136 lines
4.6 KiB
C#
136 lines
4.6 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="StgSharpTime"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using StgSharp.Collections;
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using StgSharp.Timing;
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using System;
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using System.Diagnostics;
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using System.Threading;
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namespace StgSharp
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{
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public static partial class World
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{
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public static TimeSourceProviderBase MainTimeProvider => StgSharpTime.OnlyInstance;
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}
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public sealed class StgSharpTime : TimeSourceProviderBase
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{
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private static readonly LinearBag<TimeSpanProvider> _subscribers = new();
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private static readonly Stopwatch mainProvider = new();
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private static Thread timeProvideThread;
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private StgSharpTime() { }
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// Use Stopwatch frequency as base tick frequency (ticks per second).
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public override long Frequency => Stopwatch.Frequency;
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public static StgSharpTime OnlyInstance { get; } = new StgSharpTime();
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public override long GetCurrentTimeSpanTick() => mainProvider.ElapsedTicks;
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public sealed override void StartProvidingTime()
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{
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if (mainProvider.IsRunning) {
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return;
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}
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mainProvider.Start();
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timeProvideThread = new Thread(ProvideTime)
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{
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IsBackground = true,
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Name = "StgSharpTime"
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};
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timeProvideThread.Start();
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}
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public override void StopProvidingTime()
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{
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lock (mainProvider) {
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mainProvider.Stop();
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}
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}
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public void Terminate()
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{
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lock (mainProvider) {
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mainProvider.Stop();
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}
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}
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protected sealed override void AddSubscriberUnsynced(TimeSpanProvider subscriber)
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{
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_subscribers.Add(subscriber);
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}
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protected sealed override void RemoveSubscriberUnsynced(TimeSpanProvider subscriber)
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{
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_subscribers.Remove(subscriber);
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}
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private void ProvideTime()
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{
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long internalFrequency = Stopwatch.Frequency; // ticks per second
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lock (mainProvider) {
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mainProvider.Restart();
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}
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while (mainProvider.IsRunning)
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{
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long elapsedTicks;
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lock (mainProvider) {
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elapsedTicks = mainProvider.ElapsedTicks;
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}
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if (_subscribers.Count == 0)
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{
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Thread.SpinWait(50);
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continue;
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}
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lock (SubscribeLock)
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{
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for (int i = 0; i < _subscribers.Count; i++)
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{
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if (!_subscribers[i].OnSpanTick(elapsedTicks))
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{
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// Console.WriteLine("removed");
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_subscribers.RemoveAt(i);
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i--; // adjust index after removal
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}
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}
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}
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// Optional: brief spin to avoid tight loop if frame lengths are large.
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Thread.SpinWait(20);
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}
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}
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}
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}
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