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Ryujinx/Ryujinx.Memory/MemoryAllocationFlags.cs
riperiperi 14ce9e1567
Move partial unmap handler to the native signal handler (#3437)
* Initial commit with a lot of testing stuff.

* Partial Unmap Cleanup Part 1

* Fix some minor issues, hopefully windows tests.

* Disable partial unmap tests on macos for now

Weird issue.

* Goodbye magic number

* Add COMPlus_EnableAlternateStackCheck for tests

`COMPlus_EnableAlternateStackCheck` is needed for NullReferenceException handling to work on linux after registering the signal handler, due to how dotnet registers its own signal handler.

* Address some feedback

* Force retry when memory is mapped in memory tracking

This case existed before, but returning `false` no longer retries, so it would crash immediately after unprotecting the memory... Now, we return `true` to deliberately retry.

This case existed before (was just broken by this change) and I don't really want to look into fixing the issue right now. Technically, this means that on guest code partial unmaps will retry _due to this_ rather than hitting the handler. I don't expect this to cause any issues.

This should fix random crashes in Xenoblade Chronicles 2.

* Use IsRangeMapped

* Suppress MockMemoryManager.UnmapEvent warning

This event is not signalled by the mock memory manager.

* Remove 4kb mapping
2022-07-29 19:16:29 -03:00

40 lines
1.3 KiB
C#

using System;
namespace Ryujinx.Memory
{
/// <summary>
/// Flags that controls allocation and other properties of the memory block memory.
/// </summary>
[Flags]
public enum MemoryAllocationFlags
{
/// <summary>
/// No special allocation settings.
/// </summary>
None = 0,
/// <summary>
/// Reserve a region of memory on the process address space,
/// without actually allocation any backing memory.
/// </summary>
Reserve = 1 << 0,
/// <summary>
/// Enables read and write tracking of the memory block.
/// This currently does nothing and is reserved for future use.
/// </summary>
Tracked = 1 << 1,
/// <summary>
/// Enables mirroring of the memory block through aliasing of memory pages.
/// When enabled, this allows creating more memory blocks sharing the same backing storage.
/// </summary>
Mirrorable = 1 << 2,
/// <summary>
/// Indicates that the memory block should support mapping views of a mirrorable memory block.
/// The block that is to have their views mapped should be created with the <see cref="Mirrorable"/> flag.
/// </summary>
ViewCompatible = 1 << 3
}
}