/// <inheritdoc/>
public SharedConfig <TProxy> Lookup <TType, TKey, TProxy>(ICodegenKey <TType, TKey, TProxy> codegenKey)
where TType : ICodegenType, new()
where TKey : ICodegenKey, new()
where TProxy : ICodegenProxy <TType, TProxy>, new()
{
uint slotIndex = 0;
return(MlosProxyInternal.SharedConfigDictionaryLookup <ProbingPolicy> .Get <TProxy>(SharedConfigDictionary, codegenKey, ref slotIndex));
}
/// <inheritdoc/>
public SharedConfig <TProxy> Lookup <TType, TKey, TProxy>(ICodegenKey <TType, TKey, TProxy> codegenKey)
where TType : ICodegenType, new()
where TKey : ICodegenKey, new()
where TProxy : ICodegenProxy <TType, TProxy>, new()
{
uint slotIndex = 0;
return(sharedConfigMemoryRegion.Get <ProbingPolicy, TProxy>(codegenKey, ref slotIndex));
}
/// <summary>
/// Internal lookup. TProxy type is deduced by the caller.
/// </summary>
/// <typeparam name="TProbingPolicy">HashTable lookup policy.</typeparam>
/// <typeparam name="TProxy">Codegen proxy type.</typeparam>
/// <param name="sharedConfigMemoryRegion"></param>
/// <param name="codegenKey"></param>
/// <param name="slotIndex"></param>
/// <returns></returns>
public static SharedConfig <TProxy> Get <TProbingPolicy, TProxy>(
this SharedConfigMemoryRegion sharedConfigMemoryRegion,
ICodegenKey codegenKey,
ref uint slotIndex)
where TProbingPolicy : IProbingPolicy
where TProxy : ICodegenProxy, new()
{
TProbingPolicy probingPolicy = default;
uint probingCount = 0;
slotIndex = 0;
var configsArray = new UIntArray()
{
Buffer = sharedConfigMemoryRegion.Buffer + (int)sharedConfigMemoryRegion.ConfigsArrayOffset
};
uint elementCount = configsArray.Count;
ProxyArray <uint> sharedConfigsOffsets = configsArray.Elements;
SharedConfig <TProxy> sharedConfig = default;
while (true)
{
slotIndex = probingPolicy.CalculateIndex(codegenKey, ref probingCount, elementCount);
uint sharedConfigOffsets = sharedConfigsOffsets[(int)slotIndex];
if (sharedConfigOffsets == 0)
{
// Slot entry is empty.
//
sharedConfig.Buffer = IntPtr.Zero;
break;
}
// Compare the object keys.
// Create a proxy to the shared config.
//
sharedConfig.Buffer = sharedConfigMemoryRegion.Buffer + (int)sharedConfigOffsets;
// Compare key with the proxy.
//
bool foundEntry = codegenKey.CodegenTypeIndex() == sharedConfig.Header.CodegenTypeIndex &&
codegenKey.CompareKey(sharedConfig.Config);
if (foundEntry)
{
break;
}
++probingCount;
}
return(sharedConfig);
}
/// <summary>
/// Internal lookup. TProxy type is deduced by the caller.
/// </summary>
/// <typeparam name="TProxy">Codegen proxy type.</typeparam>
/// <param name="sharedConfigDictionary"></param>
/// <param name="codegenKey"></param>
/// <param name="slotIndex"></param>
/// <returns></returns>
internal static SharedConfig <TProxy> Get <TProxy>(
SharedConfigDictionary sharedConfigDictionary,
ICodegenKey codegenKey,
ref uint slotIndex)
where TProxy : ICodegenProxy, new()
{
TProbingPolicy probingPolicy = default;
uint probingCount = 0;
slotIndex = 0;
UIntArray configsArray = sharedConfigDictionary.ConfigsOffsetArray;
uint elementCount = configsArray.Count;
ProxyArray <uint> sharedConfigsOffsets = configsArray.Elements;
SharedConfig <TProxy> sharedConfig = default;
while (true)
{
slotIndex = probingPolicy.CalculateIndex(codegenKey, ref probingCount, elementCount);
uint offsetToSharedConfig = sharedConfigsOffsets[(int)slotIndex];
if (offsetToSharedConfig == 0)
{
// Slot entry is empty.
//
sharedConfig.Buffer = IntPtr.Zero;
break;
}
// Compare the object keys.
// Create a proxy to the shared config.
//
sharedConfig.Buffer = sharedConfigDictionary.Buffer - sharedConfigDictionary.Allocator.OffsetToAllocator + (int)offsetToSharedConfig;
// Compare key with the proxy.
//
bool foundEntry = codegenKey.CodegenTypeIndex() == sharedConfig.Header.CodegenTypeIndex &&
codegenKey.CompareKey(sharedConfig.Config);
if (foundEntry)
{
break;
}
++probingCount;
}
return(sharedConfig);
}
/// <inheritdoc/>
public uint CalculateIndex(ICodegenKey codegenKey, ref uint probingCount, uint elementCount)
{
uint hashValue = codegenKey.GetKeyHashValue <THash>();
return((hashValue + probingCount++) % elementCount);
}
