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[HLE] Write single-view guest memory without the region lock

This commit is contained in:
ParantezTech 2026-10-11 01:40:16 +03:00
parent 48258b1e50
commit 8f7fa3933f
3 changed files with 27 additions and 0 deletions
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7
src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs
View File

@ -2070,6 +2070,13 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
GuestImageWriteTracker.NotifyManagedWrite(virtualAddress, (ulong)source.Length);
GuestGpuMemoryHook.MarkCpuWrite(virtualAddress, (ulong)source.Length);
if (!source.IsEmpty && _backedSpace is { } backed && !_disposed &&
backed.TryWriteSingleView(virtualAddress, source))
{
NotifyGuestWriteWatch(virtualAddress, source);
return true;
}
var requiresExclusiveAccess = false;
_gate.EnterReadLock();
try

2
src/SharpEmu.HLE/GuestMemory/GuestSpaceOwner.cs
View File

@ -67,6 +67,8 @@ public sealed class GuestSpaceOwner : IDisposable
// Reads through a view that covers the whole range without any lock; false otherwise.
public bool TryReadSingleView(ulong address, Span<byte> data) => _views.TryReadSingleView(address, data);
public bool TryWriteSingleView(ulong address, ReadOnlySpan<byte> data) => _views.TryWriteSingleView(address, data);
public object AliasSnapshot => _views.AliasSnapshot;
public bool TryEnterAliasAccess() => _views.TryEnterAliasAccess();

18
src/SharpEmu.HLE/GuestMemory/SharedBackingViews.cs
View File

@ -118,6 +118,24 @@ public sealed unsafe class SharedBackingViews : IDisposable
}
}
public bool TryWriteSingleView(ulong address, ReadOnlySpan<byte> data)
{
if (!TryAccessSingleView(address, (ulong)data.Length, out var target))
{
return false;
}
try
{
data.CopyTo(new Span<byte>((void*)target, data.Length));
return true;
}
finally
{
Interlocked.Decrement(ref _activeAccesses);
}
}
public bool TryReadBacking(ulong address, Span<byte> data)
{
if (TryAccessSingleView(address, (ulong)data.Length, out var source))