R/ARMeilleure/Translation/Cache/JumpTableEntryAllocator.cs
gdkchan 61634dd415
Clear JIT cache on exit (#1518)
* Initial cache memory allocator implementation

* Get rid of CallFlag

* Perform cache cleanup on exit

* Basic cache invalidation

* Thats not how conditionals works in C# it seems

* Set PTC version to PR number

* Address PR feedback

* Update InstEmitFlowHelper.cs

* Flag clear on address is no longer needed

* Do not include exit block in function size calculation

* Dispose jump table

* For future use

* InternalVersion = 1519 (force retest).

Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
2020-12-16 17:07:42 -03:00

72 lines
1.5 KiB
C#

using ARMeilleure.Common;
using System.Collections.Generic;
using System.Diagnostics;
namespace ARMeilleure.Translation.Cache
{
class JumpTableEntryAllocator
{
private readonly BitMap _bitmap;
private int _freeHint;
public JumpTableEntryAllocator()
{
_bitmap = new BitMap();
}
public bool EntryIsValid(int entryIndex)
{
lock (_bitmap)
{
return _bitmap.IsSet(entryIndex);
}
}
public void SetEntry(int entryIndex)
{
lock (_bitmap)
{
_bitmap.Set(entryIndex);
}
}
public int AllocateEntry()
{
lock (_bitmap)
{
int entryIndex;
if (!_bitmap.IsSet(_freeHint))
{
entryIndex = _freeHint;
}
else
{
entryIndex = _bitmap.FindFirstUnset();
}
_freeHint = entryIndex + 1;
bool wasSet = _bitmap.Set(entryIndex);
Debug.Assert(wasSet);
return entryIndex;
}
}
public void FreeEntry(int entryIndex)
{
lock (_bitmap)
{
_bitmap.Clear(entryIndex);
_freeHint = entryIndex;
}
}
public IEnumerable<int> GetEntries()
{
return _bitmap;
}
}
}