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ryujinx-final/Ryujinx.Cpu/MemoryEhMeilleure.cs
gdkchan efb135b74c
Clear CPU side data on GPU buffer clears (#4125)
* Clear CPU side data on GPU buffer clears

* Implement tracked fill operation that can signal other resource types except buffer

* Fix tests, add missing XML doc

* PR feedback
2023-02-16 18:28:49 -03:00

62 lines
2.2 KiB
C#

using ARMeilleure.Signal;
using Ryujinx.Memory;
using Ryujinx.Memory.Tracking;
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Cpu
{
public class MemoryEhMeilleure : IDisposable
{
private delegate bool TrackingEventDelegate(ulong address, ulong size, bool write);
private readonly MemoryTracking _tracking;
private readonly TrackingEventDelegate _trackingEvent;
private readonly ulong _baseAddress;
private readonly ulong _mirrorAddress;
public MemoryEhMeilleure(MemoryBlock addressSpace, MemoryBlock addressSpaceMirror, MemoryTracking tracking)
{
_tracking = tracking;
_baseAddress = (ulong)addressSpace.Pointer;
ulong endAddress = _baseAddress + addressSpace.Size;
_trackingEvent = new TrackingEventDelegate(tracking.VirtualMemoryEvent);
bool added = NativeSignalHandler.AddTrackedRegion((nuint)_baseAddress, (nuint)endAddress, Marshal.GetFunctionPointerForDelegate(_trackingEvent));
if (!added)
{
throw new InvalidOperationException("Number of allowed tracked regions exceeded.");
}
if (OperatingSystem.IsWindows())
{
// Add a tracking event with no signal handler for the mirror on Windows.
// The native handler has its own code to check for the partial overlap race when regions are protected by accident,
// and when there is no signal handler present.
_mirrorAddress = (ulong)addressSpaceMirror.Pointer;
ulong endAddressMirror = _mirrorAddress + addressSpace.Size;
bool addedMirror = NativeSignalHandler.AddTrackedRegion((nuint)_mirrorAddress, (nuint)endAddressMirror, IntPtr.Zero);
if (!addedMirror)
{
throw new InvalidOperationException("Number of allowed tracked regions exceeded.");
}
}
}
public void Dispose()
{
NativeSignalHandler.RemoveTrackedRegion((nuint)_baseAddress);
if (_mirrorAddress != 0)
{
NativeSignalHandler.RemoveTrackedRegion((nuint)_mirrorAddress);
}
}
}
}