drashna/ryujinx
1
0
Fork 0
Code Activity Actions

Remove unused physical region tracking (#2085)

Browse source 
* Remove unused physical region tracking

* Update comments
This commit is contained in:
riperiperi 2021-03-06 23:21:53 +00:00 • committed by GitHub
parent 8d36681bf1
commit a539303e71
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 24 additions and 316 deletions
Download patch file Download diff file Expand all files Collapse all files

78
Ryujinx.Memory/Tracking/VirtualRegion.cs
View file

@ -9,15 +9,12 @@ namespace Ryujinx.Memory.Tracking
class VirtualRegion : AbstractRegion
{
public List<RegionHandle> Handles = new List<RegionHandle>();
private List<PhysicalRegion> _physicalChildren;
private readonly MemoryTracking _tracking;
public VirtualRegion(MemoryTracking tracking, ulong address, ulong size) : base(address, size)
{
_tracking = tracking;
UpdatePhysicalChildren();
}
public override void Signal(ulong address, ulong size, bool write)
@ -30,42 +27,6 @@ namespace Ryujinx.Memory.Tracking
UpdateProtection();
}
/// <summary>
/// Clears all physical children of this region. Assumes that the tracking lock has been obtained.
/// </summary>
private void ClearPhysicalChildren()
{
if (_physicalChildren != null)
{
foreach (PhysicalRegion child in _physicalChildren)
{
child.RemoveParent(this);
}
}
}
/// <summary>
/// Updates the physical children of this region, assuming that they are clear and that the tracking lock has been obtained.
/// </summary>
private void UpdatePhysicalChildren()
{
_physicalChildren = _tracking.GetPhysicalRegionsForVirtual(Address, Size);
foreach (PhysicalRegion child in _physicalChildren)
{
child.VirtualParents.Add(this);
}
}
/// <summary>
/// Recalculates the physical children for this virtual region. Assumes that the tracking lock has been obtained.
/// </summary>
public void RecalculatePhysicalChildren()
{
ClearPhysicalChildren();
UpdatePhysicalChildren();
}
/// <summary>
/// Signal that this region has been mapped or unmapped.
/// </summary>
@ -98,20 +59,11 @@ namespace Ryujinx.Memory.Tracking
}
/// <summary>
/// Updates the protection for this virtual region, and all child physical regions.
/// Updates the protection for this virtual region.
/// </summary>
public void UpdateProtection()
{
// Re-evaluate protection for all physical children.
_tracking.ProtectVirtualRegion(this, GetRequiredPermission());
lock (_tracking.TrackingLock)
{
foreach (var child in _physicalChildren)
{
child.UpdateProtection();
}
}
}
/// <summary>
@ -120,7 +72,6 @@ namespace Ryujinx.Memory.Tracking
/// <param name="handle">Handle to remove</param>
public void RemoveHandle(RegionHandle handle)
{
bool removedRegions = false;
lock (_tracking.TrackingLock)
{
Handles.Remove(handle);
@ -128,41 +79,14 @@ namespace Ryujinx.Memory.Tracking
if (Handles.Count == 0)
{
_tracking.RemoveVirtual(this);
foreach (var child in _physicalChildren)
{
removedRegions |= child.RemoveParent(this);
}
}
}
if (removedRegions)
{
// The first lock will unprotect any regions that have been removed. This second lock will remove them.
lock (_tracking.TrackingLock)
{
foreach (var child in _physicalChildren)
{
child.TryDelete();
}
}
}
}
/// <summary>
/// Add a child physical region to this virtual region. Assumes that the tracking lock has been obtained.
/// </summary>
/// <param name="region">Physical region to add as a child</param>
public void AddChild(PhysicalRegion region)
{
_physicalChildren.Add(region);
}
public override INonOverlappingRange Split(ulong splitAddress)
{
ClearPhysicalChildren();
VirtualRegion newRegion = new VirtualRegion(_tracking, splitAddress, EndAddress - splitAddress);
Size = splitAddress - Address;
UpdatePhysicalChildren();
// The new region inherits all of our parents.
newRegion.Handles = new List<RegionHandle>(Handles);