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73 lines
4.1 KiB
73 lines
4.1 KiB
// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT license.
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#pragma warning disable 1591
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using System;
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namespace FASTER.core
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{
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/// <summary>
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/// Default empty functions base class to make it easy for users to provide
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/// their own implementation
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/// </summary>
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/// <typeparam name="Key"></typeparam>
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/// <typeparam name="Value"></typeparam>
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/// <typeparam name="Input"></typeparam>
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/// <typeparam name="Output"></typeparam>
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/// <typeparam name="Context"></typeparam>
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public abstract class FunctionsBase<Key, Value, Input, Output, Context> : IFunctions<Key, Value, Input, Output, Context>
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{
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public virtual void ConcurrentReader(ref Key key, ref Input input, ref Value value, ref Output dst) { }
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public virtual void SingleReader(ref Key key, ref Input input, ref Value value, ref Output dst) { }
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public virtual bool ConcurrentWriter(ref Key key, ref Value src, ref Value dst) { dst = src; return true; }
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public virtual void SingleWriter(ref Key key, ref Value src, ref Value dst) => dst = src;
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public virtual void InitialUpdater(ref Key key, ref Input input, ref Value value) { }
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public virtual void CopyUpdater(ref Key key, ref Input input, ref Value oldValue, ref Value newValue) { }
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public virtual bool InPlaceUpdater(ref Key key, ref Input input, ref Value value) { return true; }
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public virtual void ReadCompletionCallback(ref Key key, ref Input input, ref Output output, Context ctx, Status status) { }
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public virtual void RMWCompletionCallback(ref Key key, ref Input input, Context ctx, Status status) { }
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public virtual void UpsertCompletionCallback(ref Key key, ref Value value, Context ctx) { }
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public virtual void DeleteCompletionCallback(ref Key key, Context ctx) { }
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public virtual void CheckpointCompletionCallback(Guid sessionId, long serialNum) { }
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}
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/// <summary>
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/// Default empty functions base class to make it easy for users to provide
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/// their own implementation
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/// </summary>
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/// <typeparam name="Key"></typeparam>
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/// <typeparam name="Value"></typeparam>
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/// <typeparam name="Context"></typeparam>
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public class SimpleFunctions<Key, Value, Context> : FunctionsBase<Key, Value, Value, Value, Context>
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{
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private readonly Func<Value, Value, Value> merger;
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public SimpleFunctions() => merger = (l, r) => l;
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public SimpleFunctions(Func<Value, Value, Value> merger) => this.merger = merger;
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public override void ConcurrentReader(ref Key key, ref Value input, ref Value value, ref Value dst) => dst = value;
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public override void SingleReader(ref Key key, ref Value input, ref Value value, ref Value dst) => dst = value;
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public override bool ConcurrentWriter(ref Key key, ref Value src, ref Value dst) { dst = src; return true; }
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public override void SingleWriter(ref Key key, ref Value src, ref Value dst) => dst = src;
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public override void InitialUpdater(ref Key key, ref Value input, ref Value value) => value = input;
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public override void CopyUpdater(ref Key key, ref Value input, ref Value oldValue, ref Value newValue) => newValue = merger(input, oldValue);
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public override bool InPlaceUpdater(ref Key key, ref Value input, ref Value value) { value = merger(input, value); return true; }
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public override void ReadCompletionCallback(ref Key key, ref Value input, ref Value output, Context ctx, Status status) { }
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public override void RMWCompletionCallback(ref Key key, ref Value input, Context ctx, Status status) { }
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public override void UpsertCompletionCallback(ref Key key, ref Value value, Context ctx) { }
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public override void DeleteCompletionCallback(ref Key key, Context ctx) { }
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public override void CheckpointCompletionCallback(Guid sessionId, long serialNum) { }
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}
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public class SimpleFunctions<Key, Value> : SimpleFunctions<Key, Value, Empty>
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{
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public SimpleFunctions() : base() { }
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public SimpleFunctions(Func<Value, Value, Value> merger) : base(merger) { }
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}
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} |