132 lines
3.9 KiB
C#
132 lines
3.9 KiB
C#
// -----------------------------------------------------------------------------
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// file="StgSharpTime"
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// Project: StgSharp
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// Copyright (c) Nitload.
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// SPDX-License-Identifier: MIT
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// -----------------------------------------------------------------------------
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using Nitload.Common.Collections;
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using Nitload.Common.HighPerformance.ProcessorAbstraction;
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using Nitload.Common.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 Nitload
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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()
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{
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return mainProvider.ElapsedTicks;
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}
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public sealed override void StartProvidingTime(
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TimeSourceStartupConfiguration threadConfig
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)
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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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Priority = threadConfig.Priority,
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};
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timeProvideThread.Start(threadConfig);
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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(
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TimeSpanProvider subscriber
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)
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{
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_subscribers.Add(subscriber);
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}
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protected sealed override void RemoveSubscriberUnsynced(
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TimeSpanProvider subscriber
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)
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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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object? param
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)
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{
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TimeSourceStartupConfiguration threadConfig = (TimeSourceStartupConfiguration)param!;
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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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Thread.Sleep(10);
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Numa.SetThreadAffinity((int)threadConfig.CpuIndex, (int)threadConfig.ProcessorGroupId);
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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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