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Implement support for page sizes > 4KB (#4252)

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* 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>
This commit is contained in:
gdkchan 2023-01-17 01:13:24 -03:00 • committed by GitHub
parent 43a83a401e
commit 86fd0643c2
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 1294 additions and 146 deletions
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24
ARMeilleure/Signal/NativeSignalHandler.cs
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@ -71,8 +71,8 @@ namespace ARMeilleure.Signal
private const uint EXCEPTION_ACCESS_VIOLATION = 0xc0000005;
private static ulong _pageSize = GetPageSize();
private static ulong _pageMask = _pageSize - 1;
private static ulong _pageSize;
private static ulong _pageMask;
private static IntPtr _handlerConfig;
private static IntPtr _signalHandlerPtr;
@ -81,19 +81,6 @@ namespace ARMeilleure.Signal
private static readonly object _lock = new object();
private static bool _initialized;
private static ulong GetPageSize()
{
// TODO: This needs to be based on the current memory manager configuration.
if (OperatingSystem.IsMacOS() && RuntimeInformation.ProcessArchitecture == Architecture.Arm64)
{
return 1UL << 14;
}
else
{
return 1UL << 12;
}
}
static NativeSignalHandler()
{
_handlerConfig = Marshal.AllocHGlobal(Unsafe.SizeOf<SignalHandlerConfig>());
@ -102,12 +89,12 @@ namespace ARMeilleure.Signal
config = new SignalHandlerConfig();
}
public static void InitializeJitCache(IJitMemoryAllocator allocator)
public static void Initialize(IJitMemoryAllocator allocator)
{
JitCache.Initialize(allocator);
}
public static void InitializeSignalHandler(Func<IntPtr, IntPtr, IntPtr> customSignalHandlerFactory = null)
public static void InitializeSignalHandler(ulong pageSize, Func<IntPtr, IntPtr, IntPtr> customSignalHandlerFactory = null)
{
if (_initialized) return;
@ -115,6 +102,9 @@ namespace ARMeilleure.Signal
{
if (_initialized) return;
_pageSize = pageSize;
_pageMask = pageSize - 1;
ref SignalHandlerConfig config = ref GetConfigRef();
if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())