rjx-mirror/Ryujinx.Cpu/PrivateMemoryAllocation.cs
gdkchan 86fd0643c2
Implement support for page sizes > 4KB (#4252)
* Implement support for page sizes > 4KB

* Check and work around more alignment issues

* Was not meant to change this

* Use MemoryBlock.GetPageSize() value for signal handler code

* Do not take the path for private allocations if host supports 4KB pages

* Add Flags attribute on MemoryMapFlags

* Fix dirty region size with 16kb pages

Would accidentally report a size that was too high (generally 16k instead of 4k, uploading 4x as much data)

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
2023-01-17 05:13:24 +01:00

41 lines
1.2 KiB
C#

using Ryujinx.Memory;
using System;
namespace Ryujinx.Cpu
{
struct PrivateMemoryAllocation : IDisposable
{
private readonly PrivateMemoryAllocator _owner;
private readonly PrivateMemoryAllocator.Block _block;
public bool IsValid => _owner != null;
public MemoryBlock Memory => _block?.Memory;
public ulong Offset { get; }
public ulong Size { get; }
public PrivateMemoryAllocation(
PrivateMemoryAllocator owner,
PrivateMemoryAllocator.Block block,
ulong offset,
ulong size)
{
_owner = owner;
_block = block;
Offset = offset;
Size = size;
}
public (PrivateMemoryAllocation, PrivateMemoryAllocation) Split(ulong splitOffset)
{
PrivateMemoryAllocation left = new PrivateMemoryAllocation(_owner, _block, Offset, splitOffset);
PrivateMemoryAllocation right = new PrivateMemoryAllocation(_owner, _block, Offset + splitOffset, Size - splitOffset);
return (left, right);
}
public void Dispose()
{
_owner.Free(_block, Offset, Size);
}
}
}