Misaki/Misaki.HighPerformance
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feat(lowlevel): add VirtualStack, update allocators, docs

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Introduce VirtualStack allocator, refactor memory management to use virtual memory stacks, and update documentation.

Added VirtualStack as a new stack allocator using virtual memory, replaced Stack with VirtualStack in allocation manager and related APIs, and updated TempJobAllocator to use VirtualArena. Introduced AllocationManagerInitOpts for allocator configuration. Replaced ENABLE_COLLECTION_CHECKS with ENABLE_SAFETY_CHECKS for safety checks. Removed Result.cs and updated project files and examples. Added comprehensive README files for all major packages and improved root documentation.

BREAKING CHANGE: Stack allocator replaced by VirtualStack; TempJobAllocator and AllocationManager initialization signatures changed; Result types removed.
This commit is contained in:
Misaki
2026-03-19 15:38:23 +09:00
parent faf87953a3
commit 69b054e81d
24 changed files with 798 additions and 542 deletions
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9
Misaki.HighPerformance.Jobs/TempJobAllocator.cs
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@@ -7,10 +7,9 @@ namespace Misaki.HighPerformance.Jobs;
public unsafe struct TempJobAllocator : IAllocator, IDisposable
{
private const int _FRAME_LATENCY = 4;
private const uint _ARENA_SIZE = 1024 * 1024; // 1 MB
private const int _MAGIC_ID = -559038737;
private DynamicArena* _pArena;
private VirtualArena* _pArena;
private int _currentFrameCount;
private int _currentFrameIndex;
private fixed int _allocationsPerFrame[_FRAME_LATENCY];
@@ -20,18 +19,18 @@ public unsafe struct TempJobAllocator : IAllocator, IDisposable
public readonly AllocationHandle Handle => _handle;
internal void Init()
public void Initialize(nuint capacity)
{
var memoryHandle = default(MemoryHandle);
_pArena = (DynamicArena*)AllocationManager.HeapAlloc((nuint)(sizeof(DynamicArena) * _FRAME_LATENCY), MemoryUtility.AlignOf<DynamicArena>(), AllocationOption.Clear, &memoryHandle);
_pArena = (VirtualArena*)AllocationManager.HeapAlloc((nuint)(sizeof(VirtualArena) * _FRAME_LATENCY), MemoryUtility.AlignOf<VirtualArena>(), AllocationOption.Clear, &memoryHandle);
_currentFrameCount = 0;
_currentFrameIndex = 0;
_memoryHandle = memoryHandle;
for (int i = 0; i < _FRAME_LATENCY; i++)
{
_pArena[i].Initialize(_ARENA_SIZE);
_pArena[i] = new VirtualArena(capacity);
_allocationsPerFrame[i] = 0;
}