ryujinx/Ryujinx.Memory/MemoryManagement.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

206 lines
6.5 KiB
C#

using System;
namespace Ryujinx.Memory
{
public static class MemoryManagement
{
public static IntPtr Allocate(ulong size)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.Allocate((IntPtr)size);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.Allocate(size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static IntPtr Reserve(ulong size, bool viewCompatible)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.Reserve((IntPtr)size, viewCompatible);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.Reserve(size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static bool Commit(IntPtr address, ulong size)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.Commit(address, (IntPtr)size);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.Commit(address, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static bool Decommit(IntPtr address, ulong size)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.Decommit(address, (IntPtr)size);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.Decommit(address, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static void MapView(IntPtr sharedMemory, ulong srcOffset, IntPtr address, ulong size, MemoryBlock owner)
{
if (OperatingSystem.IsWindows())
{
MemoryManagementWindows.MapView(sharedMemory, srcOffset, address, (IntPtr)size, owner);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
MemoryManagementUnix.MapView(sharedMemory, srcOffset, address, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static void UnmapView(IntPtr sharedMemory, IntPtr address, ulong size, MemoryBlock owner)
{
if (OperatingSystem.IsWindows())
{
MemoryManagementWindows.UnmapView(sharedMemory, address, (IntPtr)size, owner);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
MemoryManagementUnix.UnmapView(address, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static void Reprotect(IntPtr address, ulong size, MemoryPermission permission, bool forView, bool throwOnFail)
{
bool result;
if (OperatingSystem.IsWindows())
{
result = MemoryManagementWindows.Reprotect(address, (IntPtr)size, permission, forView);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
result = MemoryManagementUnix.Reprotect(address, size, permission);
}
else
{
throw new PlatformNotSupportedException();
}
if (!result && throwOnFail)
{
throw new MemoryProtectionException(permission);
}
}
public static bool Free(IntPtr address, ulong size)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.Free(address, (IntPtr)size);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.Free(address);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static IntPtr CreateSharedMemory(ulong size, bool reserve)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.CreateSharedMemory((IntPtr)size, reserve);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.CreateSharedMemory(size, reserve);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static void DestroySharedMemory(IntPtr handle)
{
if (OperatingSystem.IsWindows())
{
MemoryManagementWindows.DestroySharedMemory(handle);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
MemoryManagementUnix.DestroySharedMemory(handle);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static IntPtr MapSharedMemory(IntPtr handle, ulong size)
{
if (OperatingSystem.IsWindows())
{
return MemoryManagementWindows.MapSharedMemory(handle);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
return MemoryManagementUnix.MapSharedMemory(handle, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
public static void UnmapSharedMemory(IntPtr address, ulong size)
{
if (OperatingSystem.IsWindows())
{
MemoryManagementWindows.UnmapSharedMemory(address);
}
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
MemoryManagementUnix.UnmapSharedMemory(address, size);
}
else
{
throw new PlatformNotSupportedException();
}
}
}
}