118 lines
4.0 KiB
C#
118 lines
4.0 KiB
C#
//-----------------------------------------------------------------------
|
|
// -----------------------------------------------------------------------
|
|
// file="L4.Predict"
|
|
// Project: StgSharp
|
|
// AuthorGroup: Nitload Space
|
|
// Copyright (c) Nitload Space. All rights reserved.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
//
|
|
// -----------------------------------------------------------------------
|
|
// -----------------------------------------------------------------------
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
|
|
namespace StgSharp.HighPerformance.Memory
|
|
{
|
|
[Flags]
|
|
public enum PredictResult
|
|
{
|
|
|
|
Success = 1,
|
|
Exhausted = 2,
|
|
|
|
}
|
|
|
|
public interface IL4Predict
|
|
{
|
|
|
|
PredictResult Predict(Span<CacheLinePrediction> node, out int count);
|
|
|
|
/// <summary>
|
|
/// Materializes the cache line identified by <paramref name="origin" /> into <paramref /// ///
|
|
/// name="cache" />.
|
|
/// </summary>
|
|
/// <param name="origin">
|
|
/// Source address associated with the cache line.
|
|
/// </param>
|
|
/// <param name="policy">
|
|
/// Mapping policy associated with the cache line.
|
|
/// </param>
|
|
/// <param name="cache">
|
|
/// Destination cache line buffer.
|
|
/// </param>
|
|
void Prefetch(nuint origin, ulong policy, Span<byte> cache);
|
|
|
|
/// <summary>
|
|
/// Writes the cache line in <paramref name="cache" /> back to <paramref name="origin" />.
|
|
/// </summary>
|
|
/// <param name="origin">
|
|
/// Source address associated with the cache line.
|
|
/// </param>
|
|
/// <param name="policy">
|
|
/// Mapping policy associated with the cache line.
|
|
/// </param>
|
|
/// <param name="cache">
|
|
/// Source cache line buffer.
|
|
/// </param>
|
|
void WriteBack(nuint origin, ulong policy, ReadOnlySpan<byte> cache);
|
|
|
|
}
|
|
|
|
public struct CacheLinePrediction : IEquatable<CacheLinePrediction>
|
|
{
|
|
|
|
public override readonly bool Equals(object? obj)
|
|
{
|
|
return (obj is CacheLinePrediction prediction) &&
|
|
Address.Equals(prediction.Address) &&
|
|
(MapPolicy == prediction.MapPolicy);
|
|
}
|
|
|
|
public readonly bool Equals(CacheLinePrediction other)
|
|
{
|
|
return
|
|
(Address == other.Address) && (MapPolicy == other.MapPolicy);
|
|
}
|
|
|
|
public override readonly int GetHashCode()
|
|
{
|
|
return HashCode.Combine(Address, MapPolicy);
|
|
}
|
|
|
|
public static bool operator !=(CacheLinePrediction left, CacheLinePrediction right)
|
|
{
|
|
return !(left == right);
|
|
}
|
|
public static bool operator ==(CacheLinePrediction left, CacheLinePrediction right)
|
|
{
|
|
return left.Equals(right);
|
|
}
|
|
|
|
#pragma warning disable CA1051
|
|
public nuint Address;
|
|
public ulong MapPolicy;
|
|
|
|
#pragma warning restore CA1051
|
|
}
|
|
}
|