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Ryujinx/Ryujinx.HLE/HOS/Kernel/KCoreContext.cs
jduncanator c1b7340023 Timing: Optimize Timestamp Aquisition (#479)
* Timing: Optimize Timestamp Aquisition

Currently, we make use of Environment.TickCount in a number of places. This has some downsides, mainly being that the TickCount is a signed 32-bit integer, and has an effective limit of ~25 days before overflowing and wrapping around. Due to the signed-ness of the value, this also caused issues with negative numbers. This resolves these issues by using a 64-bit tick count obtained from Performance Counters (via the Stopwatch class). This has a beneficial side effect of being significantly more accurate than the TickCount.

* Timing: Rename ElapsedTicks to ElapsedMilliseconds and expose TicksPerX

* Timing: Some style changes

* Timing: Align static variable initialization
2018-10-28 19:31:13 -03:00

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1.6 KiB
C#

using Ryujinx.Common;
using System;
namespace Ryujinx.HLE.HOS.Kernel
{
class KCoreContext
{
private KScheduler Scheduler;
private HleCoreManager CoreManager;
public bool ContextSwitchNeeded { get; private set; }
public KThread CurrentThread { get; private set; }
public KThread SelectedThread { get; private set; }
public KCoreContext(KScheduler Scheduler, HleCoreManager CoreManager)
{
this.Scheduler = Scheduler;
this.CoreManager = CoreManager;
}
public void SelectThread(KThread Thread)
{
SelectedThread = Thread;
if (Thread != null)
{
Thread.LastScheduledTicks = PerformanceCounter.ElapsedMilliseconds;
}
if (SelectedThread != CurrentThread)
{
ContextSwitchNeeded = true;
}
}
public void UpdateCurrentThread()
{
ContextSwitchNeeded = false;
CurrentThread = SelectedThread;
}
public void ContextSwitch()
{
ContextSwitchNeeded = false;
if (CurrentThread != null)
{
CoreManager.GetThread(CurrentThread.Context.Work).Reset();
}
CurrentThread = SelectedThread;
if (CurrentThread != null)
{
CurrentThread.ClearExclusive();
CoreManager.GetThread(CurrentThread.Context.Work).Set();
CurrentThread.Context.Execute();
}
}
}
}